| 单词 | inside surface |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔scale〕A hard mineral coating that forms on the inside surface of boilers, kettles, and other containers in which water is repeatedly heated.锅垢：在锅、壶和其它盛水器皿中经反复加热后在容器内壁形成的硬矿物质层美国传统 |
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