| 单词 | 地面以下 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔belowground〕Into or under the ground.在地下：进入地里或地面以下地美国传统〔countersink〕A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.埋头孔：顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下美国传统〔hypocaust〕A space under the floor of an ancient Roman building where heat from a furnace was accumulated to heat a room or a bath.炕：古罗马建筑地面以下的空间，在那儿火炉的热聚集给房子或沐浴供暖美国传统On-shore oil fields are often built with emergency valves below ground level, to shut off the supply if a well gets out of control.陆上油田常常在地面以下建造紧急活门，在油井失控的情况下用以关闭供油管道。剑桥国际 |
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