Our school provide you with various elective /optional courses.
我们学校提供各式各样的选修课程。
A discrete collection of bytes comprising at least one header and optional user data.
一个离散的字节集合,包含至少一个头部和用户选项数据。
ADJ If something is optional, you can choose whether or not you do it or have it. 可选择的
例:Sex education is a sensitive area for some parents, and thus it should remain optional.
性教育对一些家长来说是个敏感的话题,因此应该还是非强制性的。
常见用法
用作形容词
The insurance cover is optional.
保险范围可以随意选择。
It is optional with you.
那是你的自由。
The goods are optional, but only one.
这些物品是可以任选的, 但只能选一个。
A 4-speed automatic transmission is optional.
四段自动变速器是可自由选择的。
防范“核恐怖主义”
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