on or above the ground
在地面上(的)
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[as adv.]
it has suggested that a new line be built overground 有人建议在地面上修建一条新线路
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[as attrib. adj.]
a huge heating system pipes heat along overground tubes .巨型供热系统沿着地面管道送热。
[as attrib. adj.]legitimate; not subversive
合法的;非颠覆性的
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they devised plans for using overground political processes .他们制订了使用合法政治程序的计划。