Pet name

昵称

例句：

Tom is the pet name of Thomas.

汤姆是托马斯的昵称。

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。