So now, the enzyme is locked up with being built, and the penicillin has effectively killed the bacteria.

所以这是我第一次感受到,我想在单个原子的层面上思考这些分子,所以这时我的专业转到了化学方向。

麻省理工公开课 - 化学原理课程节选

They going to be locked up in the ambassy.

很多人会在使馆工作。

普林斯顿公开课 - 国际座谈会课程节选