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| 单词 | valve |
| 释义 |
valve [vælv] noun countable ■a device which opens and closes to control the flow of liquids or gases, or a similar structure in the heart and the veins, which controls the flow of blood 阀；活门；（心脏或血管的）瓣膜 •The valve failed to open/close •It was a weak heart ■part of a musical instrument such as a trumpet which changes the sound by controlling the flow of air （喇叭等乐器的）阀键，活塞 |
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