the end of a swimming pool where the water is deepest
深水区
(informal)give way immediately to an emotional outburst, especially of anger
(非正式)发作（尤指因愤怒）
(informal)in trouble or difficulty
(非正式)遇上麻烦，处于困境
he landed in deep water when he began the affair.
他开始婚外恋的时候就惹上麻烦了。
(informal)face a difficult problem or undertaking with little experience of it
(非正式)碰上难题，撞上麻烦
At bottom; basically
在内心深处；根本上
Deep down, she was still a rebel.
她实质上仍是个叛逆者
In difficulty.
陷入麻烦