“雪上加霜”用英语怎么说？

a turn of the screw

screw [skruː] 的意思是螺丝，turn of the screw就是指拧螺丝的那个动作。

an action that makes a bad situation worse, especially one that forces someone to do something

使情况变得更糟的行为，尤指迫使某人做某事;进一步施加的压力

Each letter from my bank is another turn of the screw.

银行的每一封来信都给我带来更大的压力。