| 单词 | valve |
| 释义 | valve 2 ENTRIES FOUND: plural valves plural valves Learner's definition of VALVE [count] 1 : a mechanical device that controls the flow of liquid, gas, etc., by opening and closing阀门；气门；闸
2 : a device in some musical instruments (such as trumpets) that you press to play different notes（小号等乐器的）阀键，活塞 — see picture at brass instrument 3 medical : a structure in the heart, stomach, etc., that temporarily stops the flow of fluid or that allows fluid to move in one direction only（心脏、胃等的）瓣，瓣膜
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