| 单词 | ground surface |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔grade〕The level at which the ground surface meets the foundation of a building.参考水准面：地表面与建筑物基础相遇的高度美国传统〔terreplein〕A platform or level ground surface on which heavy guns are mounted.垒道：架炮用的平台或平的地面美国传统〔undersoil〕Soil below the ground surface.下层土：地面下的土壤美国传统 |
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