pull one's weight?what is meaning of that?

pull one's weight?what is meaning of that? pull up one's pull one's self to pull one's leg pull one's hair out pull one's hard strings 英语翻译pull one’s  leg  pull the throne out of one's throw one's weight behind翻译 To pull one’s leg 是一句英文俗语, 用 pull one's leg（开玩笑）造句,越多越好 谁帮翻译下'Pull up one's socks!' pull the throne out of one's eyes什么意思 pull the throne out of one's eyes pull her own weight怎么翻译? pull one's 原句是To celebrate her birthday,Sandy is going to pull on her friends' ears. pull the wool ever one's eyes什么意思?loes one's head 和 cry over pilled milk 呢？ 为什么pull one's leg是开玩笑,而不是拖后腿?美式英语很怪