Question

frontier frontier ★★☆☆☆/frʌ̱ntɪə(r), -tɪ͟ə(r)/1[N-COUNT	可数名词]边界；边境 A frontier is a border between two countries.   [BRIT 英]It wasn't difficult then to cross the frontier.那时穿越边境并不困难。in AM, usually use 美国英语通常用border2[N-COUNT	可数名词]西部边疆，边远地区(指 20 世纪前美国西部欧洲移民尚未定居的部分) When you are talking about the western part of America before the twentieth century, you use frontier to refer to the area beyond the part settled by Europeans. ...a far-flung outpost on the frontier.远驻西部边疆的前哨3[N-COUNT	可数名词](尤指知识的)前沿，尖端，新领域 The frontiers of something, especially knowledge, are the limits to which it extends.   [usu pl]...pushing back the frontiers of science.推进科学前沿...technological frontiers.技术尖端 frontierfron‧tier /ˈfrʌntɪə $ frʌnˈtɪr/ ●●○ noun  Word Origin Examples Thesaurus Collocations Phrases 1[countable] especially British English the border of a countryfrontier between/with Lille is close to the frontier between France and Belgium.on/at the frontier Troops established a road block on the frontier.frontier town/area/post etc (=a town etc on a frontier)► see thesaurus at border2the frontier an area where people have never lived before, that not much is known about, especially in the western US before the 20th century:  a novel about a family’s struggle on the American frontier space, the final frontier3the frontiers of knowledge/physics etc the limits of what is known about somethingpush back the frontiers (=discover new things)

Accepted Answer

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             fron·tier              /        ˈfrʌntɪə(r)                ;          NAmE                frʌnˈtɪr                /                              noun                                                1      (        BrE)                    [countable        ]                    a line that separates two countries, etc; the land near this line          国界；边界；边境                            frontier(between A and B)                    ◆        the frontier between the land of the Saxons and that of the Danes        撒克逊人土地和古斯堪的纳维亚人土地的边界                    frontier(with sth)                    ◆        a customs post on the frontier with Italy        与意大利交界的边境上的海关关卡                    ◆        a          frontier town/zone/post                边陲小镇；边疆地带；边防站                    ☞synonyms at                                            border                                                  2      the frontier              [singular        ]                    the edge of land where people live and have built towns, beyond which the country is wild and unknown, especially in the western US in the 19th century          （尤指 19 世纪美国西部的）开发地区边缘地带，边远地区                            ◆        a remote frontier settlement        边远地区定居点                    3              [countable            ,       usually plural        ]                    frontier(of sth)                    the limit of sth, especially the limit of what is known about a particular subject or activity          （学科或活动的）尖端，边缘                            ◆        to          push back the frontiersof science          (= to increase knowledge of science)                开拓科学新领域                    ◆        to          roll back the frontiersof government          (= to limit the powers of the government)                限制政府权力                    frontier      frontiers                  fron·tier              /        ˈfrʌntɪə(r)                ;          NAmE                frʌnˈtɪr                /             www.ankiedu.club

word	frontier
content	RDnBsBRHX1LUaMRnRIQME5Lw4SHWMi6OJJMF9S7U+eS7BxYVBp/ScubZ/csXnLB6ieRnjDiHlAIZ5+qmGhsiWumSjBPP/BcenGX3JExtomtrSoxpY5awZPKqqJXiRAyTFuScB2C0IzJ1WTzDCaaB52Jmlp2MqXN5LhfgMLJ2bm2SZU2cPLbEj1+okvypuZcXBjLfMO7uMRapSLEsJDMwLVwOOmc6kgoSCj54phNVzOWAwSX5KTTrTHM2MA2BRkb3nw4u2p6NJtK0R+8LhVrDWhnVDyGlsYdDkoDSJySrUU7psByW7q+LTv3dW0zZVBrcBoBs7J9dyIZa/jIA34t+tzM6QQYAj5FqPTBdEY/WC80JTE4hOdY+a2mvFQLMHizRkiDnGOau79hedwGfhtkhrUgBW7Id2uiu/MOBBUeFVYPLT6Vq82DFK1iM6XLKXupV3Y1Wxk7IenvyPujf9Bd7RoJpLEfJmcCELQBIdSR8BWLOkf8484/y+DpsFrgg1sRbeWVy4t2TJiPiF/K5eNcxvrbbWkuU3TtXwDd0tyexKS4MUBk4g62Z2JDxI2Q1CarCVzh66++rOwMHiNX3NcxepJVLC4C+ScIWPOJy2yj/Mbg0pogEKGhOuyBJZptcHiDzkDvlD9QdzY52j5RlCEKlWpIVwiZc5aQYZKTGbyIJsneVz5yLMgn+vTz2ogbXpIBmkDvlD9QdzY52j5RlCEKlWjgaMzjT2HKYS3d/2MyPuO8nF+5EcSgwUz3XvrJ2xS0LqRGJeyyw5h0sbjb0t5SQJ8UJVp/CFYJMcP9nrHENXFMiyePhr38UH8UCOwu9mtn23z4saCXcwJ3u33yVR6r5wgfUoCF0Nlx55qK3PDHGrj2tpGQiuG6W/dmjD2ffW7VP/mEOQqOGTyXXj+GuLhbYxcRlH8QkLRsTJBacfU6haT4jEMoBpxzYf8DKVu5PaRwdovb73IElkHnu2DyFPn1dW+p58QZGuuXcloV4tVvu5a1k4HbOboZ/DhfNN7aMju+nUAioByDb4spirvPrT/+pQ1/cccBjOmwgzHM3MfSMPm04sYrsrrSZrITeBMAy9MD2xq19ChQ2Dj49+DK/DxSpGxa+BSCI9Mw+1hqlzqd4Dcf8ULamyG6r4qE1qtq4QGmZ0DKG+6Mv/Qo9jjwQ/JviTy1nMh62FY7zmpDL2ZH/03P4/396qjihKzDvErcGUN8L9msjBWXm6Ktbo28iuNIF8TaTHAiaMNjKkA5lfxtUpWDoQLASJK/iJkaY0a1B4aMovqOU+RwLdqyn0VgEms7qoTn+WXgmtKyDJnqzA4753TjntpHw+f3aPvun98p3GcWYdn27WFYwKyRq/t/wQIPYZ5vytHPFDG2228g46+bGHfInyI3kwZ5YkzYkm+31NgtePjODlWxIaQLaYnIxDWNoKvpLKeVhJ5y3UDam9xoLX8aKVzvB0awTN2a8/g9n/A/Ieih8a+dbxHEWaNeiOtSlonoPjInsN+5qh8rSWA05NhXHuAtqbwufryNa43YTo+TAgVoKvzgxZwvfFseYh+StBdlIzfBb8JIypbO2u7WMJKHHfo+eYWdonA1wANok6b+b8OZOL8/uf+hDEZAclm538nk0KIJ93UxjjgXFZKnd7F5BYCp3kw0QuUyZFys1thf3uSoeWV5daejoqbu8p8NtWfiKHjUDpQqz10qVF+rDY0OkxUsRpMzkfRkjKXLfSfpIiqipMdH6HdUHwxFQ5qlF8dxNvRrRHHWqAu5MLuET1o7bVSxYPzocZPe7N0sGS0QTbzJPxcmg8Nf+d8NIzyHHSw==
Collins	frontier ★★☆☆☆ /frʌ̱ntɪə(r), -tɪ͟ə(r)/ 1 [N-COUNT 可数名词]边界；边境 A frontier is a border between two countries. [BRIT 英] It wasn't difficult then to cross the frontier. 那时穿越边境并不困难。 in AM, usually use 美国英语通常用border 2 [N-COUNT 可数名词]西部边疆，边远地区(指 20 世纪前美国西部欧洲移民尚未定居的部分) When you are talking about the western part of America before the twentieth century, you use frontier to refer to the area beyond the part settled by Europeans. ...a far-flung outpost on the frontier. 远驻西部边疆的前哨 3 [N-COUNT 可数名词](尤指知识的)前沿，尖端，新领域 The frontiers of something, especially knowledge, are the limits to which it extends. [usu pl] ...pushing back the frontiers of science. 推进科学前沿 ...technological frontiers. 技术尖端
Oxford	fron·tier / ˈfrʌntɪə(r) ; NAmE frʌnˈtɪr / noun 1 ( BrE) [countable ] a line that separates two countries, etc; the land near this line 国界；边界；边境 frontier(between A and B) ◆ the frontier between the land of the Saxons and that of the Danes 撒克逊人土地和古斯堪的纳维亚人土地的边界 frontier(with sth) ◆ a customs post on the frontier with Italy 与意大利交界的边境上的海关关卡 ◆ a frontier town/zone/post 边陲小镇；边疆地带；边防站 ☞synonyms at border 2 the frontier [singular ] the edge of land where people live and have built towns, beyond which the country is wild and unknown, especially in the western US in the 19th century （尤指 19 世纪美国西部的）开发地区边缘地带，边远地区 ◆ a remote frontier settlement 边远地区定居点 3 [countable , usually plural ] frontier(of sth) the limit of sth, especially the limit of what is known about a particular subject or activity （学科或活动的）尖端，边缘 ◆ to push back the frontiersof science (= to increase knowledge of science) 开拓科学新领域 ◆ to roll back the frontiersof government (= to limit the powers of the government) 限制政府权力 frontier frontiers fron·tier / ˈfrʌntɪə(r) ; NAmE frʌnˈtɪr /
LDC	frontierfron‧tier /ˈfrʌntɪə $ frʌnˈtɪr/ ●●○ noun Word Origin Examples Thesaurus Collocations Phrases 1[countable] especially British English the border of a countryfrontier between/with Lille is close to the frontier between France and Belgium.on/at the frontier Troops established a road block on the frontier.frontier town/area/post etc (=a town etc on a frontier)► see thesaurus at border 2the frontier an area where people have never lived before, that not much is known about, especially in the western US before the 20th century: a novel about a family’s struggle on the American frontier space, the final frontier3the frontiers of knowledge/physics etc the limits of what is known about somethingpush back the frontiers (=discover new things)
open	www.ankiedu.club

Frontier Back N Count 可数名词 Western Frʌnˈtɪr Land Limit