pull-yourself-up-by-your-bootstraps什么意思在voa里的一段话

pull-yourself-up-by-your-bootstraps什么意思在voa里的一段话 pull up Pull yourself together 翻译中文 pull up的过去式 pull up 什么意思 pull-up是什么意思 pull up one's pull up carrots是什么意思 pull up your pull up的音标 pull up pack up意思 pull sb by the pull the bull by pull yourself together中文怎么翻译? pull one'sself up 是否有形式pull up? LIFT Ring pull UP and pull your socks up 是什么意思? pull out ,pull through,pull over,pull up的意思分别是?最后有例句,