| 单词 | piston |
| 释义 | piston piston /ˈpɪs.tən/ noun [C] ► F0 a short, solid piece of metal that moves up and down inside a cylinder in an engine to press the fuel into a small space and to send the power produced by it to the wheelsThesaurus+: ↑The engine and engine parts , ↑Engines and motors |
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