covering layer的用法和樣例：
例句
- The scratch does not penetrate the coating layer to Die.
刮傷沒(méi)有穿透保護層。 - The ozone layer is a protective layer around the planet Earth.
臭氧層是地球的保護層。 - For fish,water constantly sweeps away dirt from the covering.
對魚(yú)來(lái)說(shuō)，流水不斷地把污垢從它的眼睛的覆蓋層上帶走。 - The surface is the relatively thin covering of soil and unconsolidated rock waste.
浮土是由土壤和未固結巖屑組成的比較薄的覆蓋層。
