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- Because of the elevation of the lake's surface compared with the river level downstream, a major difference in potential energy exists across a dam. 因为湖水水面的海拔高度，比下游河水的水面还要高，因此在水坝的两边有较大的位能差异。
- The result express that the surface roughness of cutting-tools influence the roughness and the workhardening of the machined surface compare greatly. 试验表明:刀具各刀面粗糙度对已加工表面粗糙度和加工硬化有较大影响,刀面粗糙度增大,已加工表面粗糙度和加工硬化随之增大;
- But Phobos orbits so close to Mars - about 5,800 kilometers above the surface compared to 400,000 kilometers for our Moon - that gravitational tidal forces are dragging it down. 与月球和地球间的距离400,000公里相较之下，火卫一离火星实在是太近了，距离火星地表只有5,800公里，因此会受到火星的潮汐力将之向下拉。
- The results indicated that the multi-fractal dimensions could describe the transferrin surface geometry features and the uniformity of surface comparative height distribution well. 结果表明:多重维数分形谱能更好地反映与受体作用前后转铁蛋白分子的表面形态特征和分布的均匀程度;
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- The calm water surface is very much like a mirror. 那平静的水面十分象一面镜子。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- He is honest only on the surface. 他只是表面诚实而已。
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- The hard outer portion or surface area of bread. 面包皮面包的表面区域的硬皮
- Surface mail takes longer than airmail. 普通邮件比航空邮件慢。
- The surface of the lake is quite still. 湖面相当平静。
- It's2 yuan by surface mail and3.6 yuan by air. 寄平信2元，寄航空要3元6角。
- Wheels won't bite on a slippery surface. 车轮打滑。
- The surface must be thoroughly clean. 表面必须彻底弄清洁。
- The surface between the ribs of a ribbed vault. 梁腹，腹板某扇形拱的胁拱之间的平面
- An indented or concave surface or area. 凹陷，洼地凹的表面或地区
