Question

optional optional ★☆☆☆☆/ɒ̱pʃən(ə)l/1[ADJ	形容词]可选择的；非强制的 If something is optional, you can choose whether or not you do it or have it. A holiday isn't an optional extra. In this stressful, frantic world it's a must...休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。Sex education is a sensitive area for some parents, and thus it should remain optional.性教育对某些家长而言是个敏感领域，因此应该保持其非强制性。 optionalop‧tion‧al /ˈɒpʃənəl $ ˈɑːp-/ ●●○ AWL adjective  Examples Thesaurus Collocations Word family  if something is optional, you do not have to do it or use it, but you can choose to if you want to  OPP  compulsory:  three optional courses The other excursions are optional.optional extra British English Leather seats are an optional extra.RegisterIn everyday English, people often say that you don’t have to do something rather than say it is optional: Ties are optional. ➔ You don’t have to wear a tie.

Accepted Answer

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             op·tion·al              AWL                    /        ˈɒpʃənl                ;          NAmE                ˈɑːpʃənl                /                              adjective                            that you can choose to do or have if you want to        可选择的；选修的                    ◆      Certain courses are compulsory; others are optional.      有些课程是必修的，其他是选修的。              ◆      This model comes with a number of        optional extras        (= things you can choose to have but which you will have to pay extra for).            这一型号有一系列可供选择的附件，价格另计。                  op·tion·al              /        ˈɒpʃənl                ;          NAmE                ˈɑːpʃənl                /             optional[ˈɒpʃənl]CET4CET6TEM4考研GRETOEFLIELTSj576345581127825761266526ADJ2770452637Spoken:14285848任选的(100%)adj.可选择的，随意的n.选修科目

word	optional
content	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
Collins	optional ★☆☆☆☆ /ɒ̱pʃən(ə)l/ 1 [ADJ 形容词]可选择的；非强制的 If something is optional, you can choose whether or not you do it or have it. A holiday isn't an optional extra. In this stressful, frantic world it's a must... 休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。 Sex education is a sensitive area for some parents, and thus it should remain optional. 性教育对某些家长而言是个敏感领域，因此应该保持其非强制性。
Oxford	op·tion·al AWL / ˈɒpʃənl ; NAmE ˈɑːpʃənl / adjective that you can choose to do or have if you want to 可选择的；选修的 ◆ Certain courses are compulsory; others are optional. 有些课程是必修的，其他是选修的。 ◆ This model comes with a number of optional extras (= things you can choose to have but which you will have to pay extra for). 这一型号有一系列可供选择的附件，价格另计。 op·tion·al / ˈɒpʃənl ; NAmE ˈɑːpʃənl /
LDC	optionalop‧tion‧al /ˈɒpʃənəl $ ˈɑːp-/ ●●○ AWL adjective Examples Thesaurus Collocations Word family if something is optional, you do not have to do it or use it, but you can choose to if you want to OPP compulsory: three optional courses The other excursions are optional.optional extra British English Leather seats are an optional extra.RegisterIn everyday English, people often say that you don’t have to do something rather than say it is optional: Ties are optional. ➔ You don’t have to wear a tie.
WDF	optional [ˈɒpʃənl] CET4CET6TEM4考研GRETOEFLIELTS j5763 4558 112 78 2576 1266 526 ADJ2770 452637 Spoken: 14285848 任选的(100%) adj.可选择的，随意的 n.选修科目

Optional Choose Extra Op·Tion·Al Awl ˈɒpʃənl ˈɑːpʃənl Adjective

optional

Spoken: