| 单词 | piston |
|---|---|
| 音标 | 英[ˈpɪstən] 美[ˈpɪstən] |
| 解释 | n.<机>活塞; |
| 例句 | N-COUNT 活塞 A piston is a cylinder or metal disc that is part of an engine. Pistons slide up and down inside tubes and cause various parts of the engine to move. |
| 变形 | pl:pistons~ |
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