optional的例句(optional在句子中的用法)
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The goods are optional, but only one.
这些物品是可以任选的, 但只能选一个。
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San Francisco Bay Cruise, Hearst Castle Car admission is optional.
湾区游轮 、 赫氏古堡及电缆车门票.
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Appends the specified element of List ( optional operation ).
在列表尾部添加指定元素 ( 可选操作 ).
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The optional wind deflector minimizes drafts and wind turbulence, eliminating wind chill and maximising comfort.
作为备选设备的挡风板也以有效的防止气流干扰, 消除风冷,优化舒适度.
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We provide a multi - type queueing system , including vacation, feedback and optional services.
建立了休假 、 反馈、可选服务多类型相结合的排队模型.
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Compliance with Practice Advisories is optional.
是否遵守实务公告由审计师自行选择决定.
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Mnemonics are not optional.
访问键不是可有可无的,而是必须要有的.
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Certain courses are compulsory, others are optional.
某些课程是必修的,其他是选修的。
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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。
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Elevation view of a tapered key with optional gib head.
具有可选钩头的锥形键的正视图.
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Flasher is optional in accordance with user, s requirement.
根据用户要求可以加装闪光器.
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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。
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The third column of Table 1 gives the normalized DAC output after an optional current - to - voltage conversion.
表1的第三列在可选电流到电压转换后,提供规格化DAC输出.
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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。
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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。
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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。
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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。