Question

arc n.弧；弧形物vi.形成电弧；按弧形轨迹行进 (1) 第一个图形是一段弧,后跟一条直线。(2) 海滩呈弧形伸展开来。(3) 他的手臂在空中划出一道弧形。(4) 虹在天上成美丽的弧形。 In math, an arc is one section of a circle, but in life you can use the word to mean any curved shape, like the arc of a ballerina's arm or the graceful arc of a flowering vine over a trellis. In the 14th century, arc first meant the movement of the sun in the sky, from the Old French arc, "bow or arch," and the Latin root arcus, also "bow or arch."

Accepted Answer

英 [ɑːk] 美 [ɑːrk] (1) The first figure is an arc followed by a line.(2) The beach swept around in an arc.(3) His arm described an arc in the air.(4) The rainbow formed a beautiful arc in the sky. An arc is a curve. You can describe the bend of a rainbow as an arc. 1[N-COUNT 可数名词]弧形；弧线 An arc is a smoothly curving line or movement. The Aleutian chain is a long arc of islands in the North Pacific.阿留申群岛是北太平洋上一长串呈弧形排列的小岛。2[N-COUNT 可数名词]弧 In geometry, an arc is a part of the line that forms the outside of a circle.   [TECHNICAL 术语]3[VERB 动词]成弧线；呈弧形 If something arcs in a particular direction, it makes a smoothly curving line or movement.   [V prep/adv]  [LITERARY 文]A rainbow arced gracefully over the town.彩虹在小城上空画出了一道优美的弧线。

英语单词	arc
英美音标	英 [ɑːk] 美 [ɑːrk]
中文释义	n.弧；弧形物 vi.形成电弧；按弧形轨迹行进
英语例句	(1) The first figure is an arc followed by a line. (2) The beach swept around in an arc. (3) His arm described an arc in the air. (4) The rainbow formed a beautiful arc in the sky.
中文例句	(1) 第一个图形是一段弧,后跟一条直线。 (2) 海滩呈弧形伸展开来。 (3) 他的手臂在空中划出一道弧形。 (4) 虹在天上成美丽的弧形。
vocabulary简明	An arc is a curve. You can describe the bend of a rainbow as an arc.
vocabulary扩展	In math, an arc is one section of a circle, but in life you can use the word to mean any curved shape, like the arc of a ballerina's arm or the graceful arc of a flowering vine over a trellis. In the 14th century, arc first meant the movement of the sun in the sky, from the Old French arc, "bow or arch," and the Latin root arcus, also "bow or arch."
柯林斯解释	1 [N-COUNT 可数名词]弧形；弧线 An arc is a smoothly curving line or movement. The Aleutian chain is a long arc of islands in the North Pacific. 阿留申群岛是北太平洋上一长串呈弧形排列的小岛。 2 [N-COUNT 可数名词]弧 In geometry, an arc is a part of the line that forms the outside of a circle. [TECHNICAL 术语] 3 [VERB 动词]成弧线；呈弧形 If something arcs in a particular direction, it makes a smoothly curving line or movement. [V prep/adv] [LITERARY 文] A rainbow arced gracefully over the town. 彩虹在小城上空画出了一道优美的弧线。

Arc Rainbow Line Arm Bow N Count 可数名词 Smoothly