a long hollow pipe made of metal, plastic, rubber, etc., through which liquids or gases move from one place to another
- 由金属、塑料、橡胶等制成的长空心管（a long hollow pipe made of metal, plastic, rubber, etc.）
- 液体或气体通过它从一个地方移动到另一个地方（through which liquids or gases move from one place to another）
转发、关注可私信获取“高清版脑图文件”根据艾宾浩斯记忆原理，请复习单词：人教精通版小学《英语》
