pull one's hard strings

pull one's hard strings pull one's self pull to one's pull one's weight? pull up one's pull one's hair out pull on one's ear to pull one's leg 英语翻译pull one’s  leg  pull the throne out of one's To pull one’s leg 是一句英文俗语, 为什么pull one's leg是开玩笑,而不是拖后腿?