| 释义 |
| | | | NOUN | | | | | /vælv/ | | | | | 1 | the part of a machine or piece of equipment that opens and closes in order to control the flow of air or liquid （机器或设备上的）阀，活门 | | | | 2 | the part of an organ or tube in your body that opens and closes to keep liquid flowing in the right direction （身体器官或管道的）瓣，瓣膜 | | heart valves 心脏瓣膜 | | | | 3 | the part of some musical instruments that opens and closes to change the sound of the note （一些乐器上的）活塞 | | |