你是说经历伙伴之爱是必要但不充分条件。

You mean a necessary condition but not sufficient.

youdao

他们说经历痛苦才能有所收获，我告诉你，确实如此。

They say you can only gain through pain. Take it from me; it's all true.

youdao

1836年，卡曼契传说经历了令人难忘的转折点。

Comanche lore took a memorable turn in 1836.

youdao

So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.

如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。

麻省理工公开课 - 化学原理课程节选

You said that you worked before school. Could you tell us about it?

你说你上学之前曾经工作过。能跟我们谈谈这段经历吗？

我的职业是 - SpeakingMax英语口语达人

By the way, some of it were not pleasant; the cultural wars I found very unpleasant, although it may have been the most important kinds of thing I did.

顺便说一下，这个经历并不是一直很愉快;,我自己不怎么喜欢文化论战，虽然,我最重要的工作很可能是在那个时期。

普林斯顿公开课 - 人性课程节选