这是可以任选的功能部件。

This is an optional feature.

youdao

学生们将可以在英语、法语和俄语中任选一门作为他们的第一外语。

Students will be able to choose between English, French and Russian as their first foreign language.

《柯林斯英汉双解大词典》

你可以保留一张照片。两张里任选一张—拣你喜欢的。

You can keep one of the photos. Either of them—whichever you like.

《牛津词典》

So the strategy choices, we're not going to do it in hours, let's just normalize and regard these choices as living in 0 to 4, and you can choose any number of hours between 0 and 4.

我们用小时数来表示策略吧,用0到4的数字来标记这些策略,你可以从0到4中任选工作的小时数

耶鲁公开课 - 博弈论课程节选