Fast asleep:
睡得很快 ×
酣睡 √
例句:
They were both fast asleep in their cots.
他们俩在婴儿床上酣睡着。
In the pink:
穿粉色的 ×
身体健康 √
例句:
A glass of red wine keeps you in the pink.
一杯红酒有益健康。
In the swim:
在里面游泳 ×
跟上形势 √
例句:
As a police officer, I have to stay in the swim of what's going on in the streets and in our neighborhoods.
作为警官,我必须十分了解街上和我们街区里发生的事情。