Definition: the top or outside part of something Level: B2
阳光反射在水面上。
The sun was reflected on the ___surface of the water.
热带雨林曾覆盖地球表面的10%。
Tropical rainforests used to cover 10% of the Earth's ___surface.
这块大理石有一个光滑、闪亮的表面。
The marble has a smooth, shiny ___surface.
