表面 surface; superficies; boundary; face; rind; sheet; skin; outside; appearance 表面之词 a superficial statement; 表面价值 face value; 粗糙的表面 a rough surface; 光滑的表面 a smooth surface; 地球的表面 the surface of the earth; the face of the earth; 事物的表面 the surface of things; 表面上气壮如牛, 实际上胆小如鼠 outwardly fierce as a bull but inwardly timid as a mouse; 你不能只看事情的表面。 you must not look only at the surface of things. 他那番话不过是表面文章。 he was merely paying lip service
It is generally assumed that the photic zone extends to the depth at which the light intensity is reduced to 1% of the value at the surface . 通常认为光照带伸展到光强度降低为表面值为1的深度。