| 单词 | optional |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔ADD〕Tinted windows and a sunroof are optional extras. 有色玻璃窗和车顶天窗是备选的配件。朗文写作活用〔MUST/DON'T HAVE TO〕General Studies is optional for sixth-form students. 对六年级学生来说常识课是选修的。朗文写作活用〔MUST/DON'T HAVE TO〕The holiday price includes entertainment in the evenings, and there are optional excursions on offer every day. 度假费用包含晚上的娱乐活动，而且每天都有自愿参加的短途游览。朗文写作活用〔MUST/DON'T HAVE TO〕You don't have to do French - it's optional. 你不一定要学法语，它是选修课。朗文写作活用〔commentary〕The deleted scenes have an optional commentary by the director.被删除的场景有导演的随片可选评论。牛津搭配〔curriculum〕Students choose from optional subjects in addition to the core curriculum.除了核心课程外，学生们还选择选修课。牛津搭配〔elective〕An optional academic course or subject.选修的科目：选修课程或课题美国传统〔excursion〕We also recommend a full day optional excursion to the Upper Douro.我们还推荐去杜罗河上游的短途自选一日游。柯林斯高阶〔excursion〕We also recommend a full-day optional excursion to the Upper Douro.我们还推荐去杜罗河上游的短途自选一日游。外研社新世纪〔extra〕Optional extras include anti-lock brakes and an electric sunroof.可选择的附加品包括防抱死制动系统和电动遮阳篷。牛津搭配〔extra〕Optional extras include cooking tuition at a top restaurant.可选的额外项目包括在一家顶级餐厅学习烹饪。外研社新世纪〔extra〕Optional extras include cooking tuition at a top restaurant.可选的额外项目包括在顶级餐厅学习厨艺。柯林斯高阶〔extra〕A sunroof is an optional extra on this model of the car.购买这款汽车，就可以选择搭配一款额外收费的天窗。剑桥高阶〔extra〕A virus checker is available as an optional extra for your computer.可为计算机选择安装额外的查毒软件。麦克米伦高阶〔extra〕Metallic paint is an optional extra(= a thing you can choose to have or not, but must pay more for if you have it).喷金属漆是自由选择的，要额外收费。牛津高阶〔extra〕The boat trip is an optional extra.坐小船游玩是可选的付费项目。外研社新世纪〔extra〕Tinted windows and a sunroof are optional extras (=something that you can choose to have or not) .有色玻璃窗和车顶天窗是另外收费的备选配件。朗文当代〔facultative〕Not required or compulsory; optional.任意的：不被要求或强制的；可选择的美国传统〔module〕I'm doing two optional modules.我正在学习两个选修单元。牛津搭配〔module〕The course consists of ten core modules and five optional modules.这门课程包括十个必修单元和五个选修单元。牛津高阶〔optional〕A CD player is an optional extra.雷射唱盘是可随意取舍的附属品。文馨英汉〔optional〕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。外研社新世纪〔optional〕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。柯林斯高阶〔optional〕Certain courses are compulsory; others are optional.有些课程是必修的，其他是选修的。牛津高阶〔optional〕English is compulsory for all students, but art and music are optional.英语是所有学生的必修课，而艺术和音乐则是选修的。剑桥高阶〔optional〕Formal dress is optional.穿不穿正式服装都可以。文馨英汉〔optional〕French is optional at this school.在这所学校, 法语是选修课。外研社新世纪〔optional〕Jackets are required at the restaurant, but ties are optional.这家饭店要求必须穿夹克式外套，但领带不是必需的。韦氏高阶〔optional〕Leather seats are an optional extra.皮坐椅是可选配件。朗文当代〔optional〕Many optional features are available on this car.这款汽车提供了很多可选择的功能。韦氏高阶〔optional〕Purchase of tickets is purely optional.购票并非是必须的。英汉大词典〔optional〕Registration is optional, not mandatory.注册是可选的，不是强制的。韦氏高阶〔optional〕Remote central locking comes as an optional extra.（通常指需另交费的）额外可选之物麦克米伦高阶〔optional〕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。柯林斯高阶〔optional〕The car comes with many optional extras such as radio and cigarette lighter.这辆汽车配有很多可选附件, 比如收音机和点烟器等。外研社新世纪〔optional〕The extra language classes are entirely optional.附加的语言课程是自由选修课。牛津搭配〔optional〕The history course is optional, but English is compulsory.历史课是选修的，但英语课是必修的。麦克米伦高阶〔optional〕The other excursions are optional.其他的短途旅行是自选的。朗文当代〔optional〕The price includes hotel and meals – entertainment is optional.这个价格包括旅馆和膳食，娱乐是可选可不选的。麦克米伦高阶〔optional〕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。牛津高阶〔permissive〕Permitting discretion; optional.允许自行处理的；随意的美国传统〔ringtone〕My phone came with 20 optional ringtones.我的手机有20种铃声可供选择。剑桥高阶〔subtitle〕The film is presented in French with optional English subtitles.影片对白为法语，但有可选的英语字幕。牛津搭配An optional excursion has been organised for every day of your holiday to a nearby place of interest.你们假期的每一天都组织有往附近某个景点去的自愿远足活动。剑桥国际An optional service charge of 12.5% will be added to your bill.你的账单将会被额外增加 12.5% 的可选择支付的服务费。牛津商务The CD player is an optional extra.光盘播放器是可选的附加配置。牛津商务The charge for going into the museum is optional.进这座博物馆的费用不是必须付的。剑桥国际The computer comes with a number of optional accessories.这台计算机配有很多任选的附件。剑桥国际This model comes with a number of optional extras (= things you can choose to have but which you will have to pay extra for).这种型号有多种配件可供选购。牛津商务You must wear a shirt and tie, but jackets are optional.你们必须穿衬衫、系领带，但是否穿夹克衫则自便。牛津商务 |
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