Have a thin/thick skin
As a salesperson, you have to have a thick skin to deal with all the rejection.
Skin v. 剥掉…的皮
I skinned my knee when I fell down the steps yesterday.
Skin one alive
My dad will skin me alive if he finds out I stole his money.
Be skin and bones
He has been stressful and he is skin and bones these days.
Get under one's skin
I know he's bothersome, but don't let him get under your skin.