游泳圈是我游泳时的最好朋友。

The life ring is my best friend when I swim.

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实际上，许多十几岁的男孩连一个最好朋友的名字都说不出来。

In fact, many teenage boys can't name a single best friend.

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黛西是我的最好朋友。

Daisy is my best friend.

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And so for the three years that I was in the residential colleges, my closest friends on the whole were faculty or were .

因此，那三年来,我住在住宿学院中，总体说来，我最好的朋友,都是教员或一些研究生们。

普林斯顿公开课 - 人性课程节选

So I threw a party in New York, and her best friend, my co-worker came, and she brought her,

我在纽约开了个派对，而她最好的朋友，也就是我的同事，把她带到派对上去了。

第一次与妻子见面 - SpeakingMax英语口语达人

That's where I can have moral or immoral behavior toward my best friend or baby, or other people in general.

我可以选择道德和不道德的行为,对待最好的朋友，孩子或一般人。

哈佛公开课 - 幸福课课程节选