For example, concerns about the harmful effects of the sun's UV rays have for some time been resolved by the invention and dissemination of sunscreenagents.
例如,在经过若干时间的焦虑后,人们对太阳的紫外线有害影响的担忧已随着防晒霜的发明和普及而烟消云散。
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Unless sun lovers continually reapply sunscreen, agents in the sunscreen itself can attack the skin and leave the body susceptible to ultraviolet radiation, researchers say.