The ozone layer screens out dangerous rays from the sun.

臭氧层能遮挡住来自太阳的有害射线。

It is widely known that CFCs can damage the ozone layer.

众所周知氯氟烃会破坏臭氧层。

The ozone layer shields the earth from the sun's ultraviolet rays.

臭氧层保护地球不受太阳紫外线的辐射。

They will press for international action to safeguard the ozone layer.

他们将竭力要求国际行动来保护臭氧层。

But the ozone layer is not yet safe.

但是即使如此，臭氧层依然没有获得安全保障。