When they make milk they have signals for turning on the betagalactoglobulin promoter and expressing the gene of interest.

泌乳的时候,β-乳球蛋白启动子受信号调控而开启,目的基因得以表达

耶鲁公开课 - 生物医学工程探索课程节选

You're taking advantage of a promoter system, or a gene activation system, that this species knows about because adult animals can make milk.

我们之所以能利用这个启动子系统,或者称之为可以被这一物种识别的,基因活化系统,是因为成年动物可以泌乳

耶鲁公开课 - 生物医学工程探索课程节选

Many kinds of molecules make up your coffee There are the water molecules, the flavor molecules the milk proteins, etcetera.

许多不同种类的分子构成了你的咖啡,有水分子，气味分子，牛奶蛋白等等。

麻省理工公开课 - 热力学与动力学课程节选

Latte, which is a homogeneous system, has a very, very large number of components to it All the components that make up the milk.

拿铁咖啡是个均匀系统，但它有非常非常多的组分,牛奶中的所有组分咖啡中的所有组分。

麻省理工公开课 - 热力学与动力学课程节选