| 单词 | inner tube |
| 释义 | inner tube【机】 内胎 inner tube inner tube n.（名词）A flexible, airtight hollow ring, usually made of rubber, that is inserted into the casing of a pneumatic tire for holding compressed air.内胎：柔韧密封的内空环形物，通常用橡胶制成，它被嵌入气胎的套子里用来盛装压缩的空气 |
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