释义：当对知识的理解达到真实、确切、坚定的程度时，这种理解就会体现为具体的行动；而在行动中能做到明白、警觉、精细、明察的地步，这也反映了对相关知识的掌握。

The stream of thought is a stream of survival.

妈妈永远是我内心最柔软的地方。

Science is a wonderful thing if one does not have to earn one's living at it.

Some of my best leading men have been dogs and horses.

解释：大部分茶都是寒性的，而绿茶却是温性的，体现了茶性质的差异。