| 释义 |
valveBrE /vælv/ NAmE /vælv/ noun a device for controlling the flow of a liquid or gas , letting it move in one direction only 阀；阀门；活门；气门a structure in the heart or in a veinthat lets blood flow in one direction only （心脏或血管的）瓣（膜）a device in some brass musical instruments for changing the note （铜管乐器的）阀键，活塞 |