idiom

bite the hand that feeds one 恩将仇报

sit on one's hands 不采取行动 ; 袖手旁观 ; 不予鼓掌；置之不理；无动于衷；按兵不动

have one’s hands full 忙得不可开交

Hand it to 赞扬；佩服；承认...的长处

Green hand 新手；菜鸟；没有经验的人

have a bone to pick with someone 对某人有意见

Put yourself in other people's shoes  设身处地为别人着想；换位思考