已经陈旧落伍，但在以前确是最聪明的博客爱好者来使用的一种搜索引擎。

Is the old stand-by, the blog search engine that the smartest blog lovers used to use.

youdao

但在以前的许多研究报告中，人们认为基因或环境因素是导致这种联系的元凶。

In many past observational studies, however, basic genetics or environmental factors could be blamed for this association.

youdao

只是我们的风格发生变化，现代英语不再视其为好的写作风格，但在以前的希腊语中是好的。

Just because our styles have changed, and it's no longer considered good writing style in modern English, but it was good writing style in Greek.

youdao

But there was an exhibit of jellyfish, I know at least until last year, at the Boston Museum of Science, and all of you guys can get in there free.

但那以前有水母的展示，我知道至少去年有，在波士顿科学博物馆，你们都可以免费去看。

麻省理工公开课 - 化学原理课程节选

So one problem is unenforceability but that might far off ago that might have been a problem.

强制性是一个问题,但那也是在很久以前的问题

耶鲁公开课 - 博弈论课程节选

This is something I used to announce near the end, but then some people felt that it's not fair not to know this from the beginning.

这些话我以前都是在期末的时候说的,但后来有些同学反映,如果不在课程一开始知道这些会很不公平

耶鲁公开课 - 基础物理课程节选