These proteins have functions that are essential for life of the cell, they transport molecules back and forth across the membrane.

这些蛋白所起的功能,对于细胞生存至关重要,它们负责转运分子通过细胞膜进出细胞

耶鲁公开课 - 生物医学工程探索课程节选

and then the Transport for London issues them with a license in order to be able to trade as a minicab.

然后，伦敦交通局发给他们一个驾照，以便他们能开微型出租车拉客。

小心微型出租车 - SpeakingMax英语口语达人

They're already paying for public transport, so it's just kind of a financial expense they could do without.

他们已经向公共交通付钱了，所以，那只是一笔没有必要的财务支出。

公共交通更方便 - SpeakingMax英语口语达人

And Transport for London are always telling people to not to use the minicab, illegal minicab drivers,

伦敦交通局经常警告市民，不要坐不合法的微型出租车，

小心微型出租车 - SpeakingMax英语口语达人

There's also the Transport Museum down there, that's definitely worth for a look, so.

那边还有交通博物馆，那是绝对值得一看的。

科芬园的氛围 - SpeakingMax英语口语达人

What they do is they just apply to Transport for London for a licence,

他们要做的就是向伦敦交通局申请驾照，

小心微型出租车 - SpeakingMax英语口语达人