一切幸福都并非没有烦恼，而一切逆境也绝非没有希望。

All happiness is not without trouble, and all the adversity is not without hope.

youdao

我也这样希望。史密斯先生，谢谢您在我逗留期间给我的一切帮助。

I hope so, too. Thank you, Mr. Smith, for everything you have done for me during my stay here.

youdao

关于“步行”最让人愉快的事情则是你就是自己的老板：随时可以开始步行，随时可以停驻脚步；你可以观望一切，也可以什么都不去理会；可以思考很多东西，也可以稍作遐想。

The best thing about walking is that you are your own boss: start and halt, look at everything or nothing, think about a lot or a little.

youdao

Or you could ask the question, I have this restriction enzyme, at what regions on this plasmid will it cut?

你也可以这样问,我的这种限制性内切酶,会从质粒的哪个区域切开呢

耶鲁公开课 - 生物医学工程探索课程节选

Most restriction enzyme also recognize symmetric sequences of DNA, GAATTC for example.

大多数限制性内切酶,也能识别DNA的对称序列,例如GAATTC

耶鲁公开课 - 生物医学工程探索课程节选