| 词汇 | piston |
| 词根词缀 | 词源： 1704, from Fr. piston, from M.Fr. piston "large pestle," from O.It. pistone, variant of pestone "a pestle," from pestare "to pound," from L.L. pistare, freq. of L. pinsere (pp. pistus) "to pound" (see pestle). 词根记忆： n. 活塞On the Christmas the Christian's assistant fisted Pistol Piston and twisted his wrist.在圣诞节,基督徒的助手拳击了"手枪活塞"并扭了他的手腕. |
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