这会让他们的望远镜蒙上一层雾气。
Sometimes the nose fit isn't perfect and my eyeglasses fog up.
有时候鼻子部分不是很贴合，我的眼镜就起雾了。
Fog up a piece of glass with your breath and look through the fogged plate in a darkened room at a white-light point source.
哈气使一片玻璃蒙上一层水雾，并在一个暗间里通过它来观察一个白色点光源。
Fog up a piece of glass with your breath and look through the fogged plate in a darkened room at a white-light point source.
哈气使一片玻璃蒙上一层水雾，并在一个暗间里通过它来观察一个白色点光源。
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