这个玻璃杯放在大罐口上恰好当个盖子。

The glass fits on top of the jug to form a lid.

《牛津词典》

她小时候很虚弱，父母就把她当个病人照料。

She had been a delicate child and her parents had treated her as an invalid.

《牛津词典》

协调我工作的要求与我当个好父亲的愿望很难。

It's difficult to reconcile the demands of my job and the desire to be a good father.

《柯林斯英汉双解大词典》

So I heard of this program that's in Hartford, the Hartford Theological Seminary, It's traditionally a Christian seminary.

因此当我听说哈特福特有个项目时，哈特福特神学院，是的，是传统的基督教神学院。

普林斯顿公开课 - 人性课程节选

So if you have a great idea, you know, talk to a good patent attorney and get it locked away.

所以当你有个好点子的时候，你们知道的，找个专利代理人,然后把它好好藏起来吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

Here's a hoplite standing like this, and when he comes into contact with the opposing army, he will presumably strike down in this way.

这儿有个重步兵这样站着,当在战场中遭遇敌人时,他应该会这样刺下去

耶鲁公开课 - 古希腊历史简介课程节选