问题被移到一个更高的层次：从切洋葱到做出一份美味的番茄酱。

The problem now moves to a higher level, from chopping Onions to making a good tomato sauce.

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8个上规模的牡蛎养殖场就可以从切萨皮克湾海水中净化出1吨氮素。

Eight large-scale oyster farms could clean a ton of nitrogen from the Chesapeake.

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“水舍”项目从切萨皮克海湾(Chesapeake Bay)生态系统中获得灵感，着重强调暴风雨水的利用，废水处理和节省用水。

WaterShed was inspired by the Chesapeake Bay ecosystem and focuses heavily on managing storm water, treating greywater and minimizing water usage.

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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

There are whole catalogs that you go to and buy restriction enzymes.

我们已经可以从整本的目录上,挑选购买限制性内切酶

耶鲁公开课 - 生物医学工程探索课程节选