coolness

Her coolness in an emergency was admirable.

她在危急关头表现出的冷静沉着令人钦佩。

I noticed a certain coolness between your parents.

我注意到你父母彼此间有些冷漠。

There's a slight coolness in the air - do you think it's going to rain?

空气中有一丝凉意——你觉得会下雨吗？