| 单词 | 大齿轮 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔engage〕When the large gear wheel engages (with the smaller one), the mill stone will start to go round.当大齿轮（与小齿轮）啮合时，石磨就开始转动。剑桥高阶〔pinion〕A small cogwheel that engages or is engaged by a larger cogwheel or a rack.小齿轮，齿杆：啮合大齿轮或被大齿轮或齿条啮合的小齿轮美国传统When the large cog wheel engages (with the smaller one), the mill stone will start to go round.当大齿轮(与小齿轮)啮合时，石磨就开始运转。剑桥国际 |
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