柯林斯詞典valve /v?lv/ (valves) 1. N-COUNT A valve is a device attached to a pipe or a tube that controls the flow of air or liquid through the pipe or tube. 閥門 返回 valve劍橋詞典a device that opens and closes to control the flow of liquids or gases , or a similar structure in the heart and the veins that controls the flow of blood 閥；活門；（心臟或血管的）瓣膜 The valve failed to open /close . 閥門打不開／關(guān)不上了。 It was a weak heart valve that caused her death . 是心瓣膜問題導致了她的死亡。 part of a musical instrument such as a trumpet that changes the sound by controlling the flow of air （喇叭等樂器的）閥鍵，活塞 返回 valve