太阳的紫外线是皮肤晒黑和晒伤的原因。
The sun's ultraviolet rays are responsible for both tanning and burning.
如果紫外线辐射继续加强的话，我们预计鲸鱼将遭受更严重的晒伤。
We predict that whales will experience more severe sun damage if ultraviolet radiation continues to increase.
防晒霜可以阻止导致晒伤的短波紫外线，更新的一些配方还可以阻止导致皱纹和老化的长波紫外线。
Sunscreens do block the UVB radiation that causes sunburn, and more recent formulas also block the UVA radiation that causes wrinkles and aging.
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