高湿度意味着空气中水蒸汽含量高——蒸汽浓缩会成为可以看得见的“雾”，就像我们在潮湿的夏天在汽车和建筑物的空调口所见到的那样。

High humidity means high levels of water vapor in the air - the vapor that condenses and becomes visible as "fog" on Windows of air-conditioned cars and buildings on steamy summer days.

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但是随着防雾眼镜的发明，这种水汽蒙蒙的时刻——通常是由于镜片本身比周围空气温度低或者高——将会彻底终结。

But such steamy moments - which usually happen when lenses are colder or warmer than the air around them - could be wiped out with the invention of non-fogging glasses.

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