And we had a bunch of drop downs I was able to choose from.

这儿有一些下拉菜单可供选择。

哈佛公开课 - 计算机科学课程节选

Sure. So there are a ton of internship programs all over the place.

当然。现在有许多实习项目可供选择。

在哪都可以实习 - SpeakingMax英语口语达人

So the library books are all optional background.

所以图书馆内的书,都是可供选择的背景资料

耶鲁公开课 - 金融市场课程节选

There'll be a variety of times you can choose.

有多个时间可供选择。

耶鲁公开课 - 新约课程节选

There are more than 20 amino acids that make up the biological polymers called proteins, so there are 20 choices of each amino acid at a position on a protein.

而那些称为蛋白质的生物活性多聚体,是由二十种不同氨基酸所构成,因此每个蛋白质的,任意位点都有多达二十种氨基酸可供选择

耶鲁公开课 - 生物医学工程探索课程节选

On the other hand, we've seen n that if the size of a is n, that's to say, we have n elements to choose from, then the number of possible subsets is 2 to the n.

另一方面，我们看到,如果a集合的大小是，也就是说我们有n个元素可供选择，而可能的子集的元素,个数就是2的n次方。

麻省理工公开课 - 计算机科学及编程导论课程节选