提到沙漠,人们眼前浮现的,往往是一片不毛之地——广布的沙丘、戈壁,而且见不到什么动植物。其实,沙漠本身倒是拥有生物生存的许多条件:空气、充足的阳光及各种营养物质,所缺的,仅是水分。沙漠中只要有水,就会有许多生命,就能出现一片绿洲。 在辽阔的海洋中,有许多水域,象近极地的北太平洋海域等也具有海中 When it comes to the desert, what people are seeing in front of them is often a barren land - the vast sand dunes, the Gobi, and no plants and animals. In fact, the desert itself has many conditions for living things: air, plenty of sunlight and various nutrients. What is missing is only water. If there is water in the desert, there will be many lives and an oasis will emerge. In the vast ocean, there are many waters, like the polar waters of the North Pacific Ocean, etc.