He says they might be attempting to increase their dopamine levels to make up for the deficits in their reward system.

VOA: special.2009.09.29

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

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