短语词组短语tail cutting off distribution 截尾分布tail -off 发动机关闭working my tail off 我学习tail off duration 拖尾段bob -tail off 摘除拖架Work your tail off 拼命地工作Work my tail off 玩命工作working tail off 工作太紧张Tail end hop off 尾部下车;尾端合掉 返回 tail off