很多干枯的头发没有光泽可言，除了缺少水分外就是缺少营养。
Many dry hair without burnish whatsoever, except the lack moisture is the lack of nutrition.
水让人存活，当人感到渴的时候，他们的身体缺少水分，需要喝水来增加能量。
Water keeps people alive, when people feel thirsty, their bodies are lacking of water, they need to drink some water to gain the energy.
煤烟的污染导致高原的积雪融化时间逐年提前，到了夏季，处在下游的农作物就会缺少水分。
Soot on snow causes the plateau's annual snowpack melt to happen sooner each year, causing farmers below it to have less water for their crops in the summer.
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