The problem is the same, how do I get the gene that I want into only the cells that I want?

同样的问题又来了,怎样准确地,把目的基因只导入特定细胞呢

耶鲁公开课 - 生物医学工程探索课程节选

the fact that the only problem you're having is the lack of what your expressing and need for.

事实上，你唯一的问题就是你缺少或需要的东西仍未被满足。

I need 课堂 - SpeakingMax英语口语达人

The problem with finance is that it's a beautiful -financial institutions are beautiful structures but they only are as good as the people who use them.

金融业的问题是...,金融机构的结构十分巧妙,但它们的优劣取决于从业人员

耶鲁公开课 - 金融市场课程节选

Your problem is to only look at the forces of contact on you, and that is just this f.

你只需要注意那些直接作用在这个物体上的力,那就只有 f 了

耶鲁公开课 - 基础物理课程节选