氮泵 dànbèng pre-workout Definitions Defs Origin Strokes Stroke Words Sentences Sents 氮 dàn noun nitrogen the nonmetallic chemical element with symbol N; a colorless, odorless gas that makes up about four-fifths of the earth's atmosphere泵 bèng noun pump A machine used to move or compress liquids and gases; a loanword from English.
