记得当年有一首广为诵唱的歌曲中有几句歌词琅琅上口:“鱼儿离不开水,瓜儿离不开秧。”现在我们多数人还能唱得很溜儿。这是对水最朴素的认识,水里的动物么,离开水自然就会死亡。其实呢,所有的生物都离不开水,只是离开时间的长短问题,时间长了都会死掉。本来生物都是从水中进化来的,有了水的环境才有了适应水的生物,离开水自然是不行的。 I remember there was a widely sung song in a few lyrics catchy: “The fish can not do without water, melon children can not do without seedlings.” Now most of us can sing very slipped children. This is the most simple understanding of the water, the animals in the water, leaving the water will naturally die. Actually, all creatures are inseparable from the water, just leave the length of the problem, a long time will die. Originally organisms are evolved from the water, with the water environment to adapt to the water creatures, leaving the water is not natural.