1·Varnish is the glossy protective layer applied to wooden furniture and other surfaces.
清漆是用于木质家具和其他表面的光滑的保护层。
2·Too much exfoliating removes the top layer of the skin, which is the protective layer.
使用过多去角质的产品会除掉皮肤的表层，也就是保护层。
3·Then they often follow that with a sprinkling of dust to create a protective layer of dirt on their skin (think elephant sunscreen!)
然后会再洒上少量尘土，在皮肤上形成一个尘土的保护层(大象也防晒吧！)
4·Since the 1970s, scientists have known that the protective layer is being depleted by manmade gases, in particularly the CFCs once used in aerosols .
自从20世纪70年代以来，科学家就知道这一保护层一直被人造气体损耗，特别是曾用于喷雾剂的氯氟烃。
5·There should be put in the box at the bottom of the box as a protective layer.
还有放入之前应该用一下纸放在箱子底部作为保护层。