He took the plunge into the deep end.

他跳入深水区。

She was floundering around in the deep end of the swimming pool.

她在游泳池深水区挣扎着。

Junior hospital doctors are thrown in at the deep end in their first jobs.

医院的初级医生开始工作时会遇上未曾料到的困难。

He surely went off the deep end when he bought that restaurant.

他买下那家饭店的确太贸然行事了。

Can you swim to the deep end?

你能游到深的那一头吗？