地面: the earth's surface; ground的: 4次方是 The fourth power of 2 i ...起伏: rise and fall; ups and downs ...底面的起伏: hyporelief大地水准面的起伏: undulation of the geoid波状的起伏: flexuosity地势的起伏: relief n. elevation of land surfaces注意的起伏: fluctuation of attention一长串的起伏: long series of rises and falls地面的: above ground; earth based; ground-based; ground-borne; overground; overland; subaerial; superficial; surface; terrestrial低起伏地面: low-relief surface地面起伏: accident of the ground; surface irregularity; surface relief; surface undulation; terrain relief起伏地面: fold; rolling ground; rugged terrain声干涉的起伏现象: interference fluctuation of sound地面起伏高度: relief height地表的, 地面的: surficial接近地面的: subaerial空对地面的: air to surface离地面的: euvehed ovl9hzd泥土地面的: unsurfaced船体的起伏升降运动: heave mode平直幅频特性的起伏噪声: flat channel noise地面上的, 接近地面的: subaerial地面的覆盖物: mulch对地面的压力: foltation pressure