查询词典 optional course

Leaving your email is optional, and in any case, it will not be revealed.

离开您的电子邮件是可选的，在任何情况下，也不会透露。

This is optional.---

这是可选择的。---

You can give it your own name and it has 2 optional elements

你可以给它自己的名字和它有2个可选元素。

It's not just optional.

这不只是可选的。

Note: you do NOT have to use this service its optional.

注意：您没有使用此服务的可选的。

It is important to keep in mind that these features are optional.

记住这些特性只是供选择的是很重要的。

However, if an application is designed in such a way as to offer some optional

但是，如果应用程序设计的方式，以提供一些可选

You are not required to provide your name or contact information as it is optional.

您的姓名和联系方式不是必须填写的，这是可选的。

It is optional to you to provide the following information.

如你愿意的话，请提供下列资料。

This question is only optional, but if you could response to it, you have extra credit.

你可以选择不回答，但如果你回答的话，将增加你的信任度。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。