Take advantage of the difference by hanging a damp sheet in an open window.It will blow in a cooler breeze as the incoming wind is cooled by the evaporating water.

• 利用这样的一个温差，在一扇打开的窗户上面，挂上一张弄湿的床单，由于吹入屋内的风会被（毯子上）蒸发的水所冷却，从而吹起的是更为凉爽的微风。