| 词汇 | valve |
| 词根词缀 | 词源： 1387, "one of the halves of a folding door," from L. valva "section of a folding or revolving door," lit. "that which turns," related to volvere "to roll" (see vulva). Sense extended 1615 to "membranous fold regulating flow of bodily fluids;" 1659 to "mechanical device that works like a valve;" and 1661 in zoology to "halves of a hinged shell." 词根记忆： n. 阀;(英)电子管,真空管;(心脏的)瓣膜Something is wrong with the valve.阀门有问题. |
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