12.范围从微生物一直到巨物ranges from the tiniest plankton all the way up to giants

11.海洋生命丰富、多样，令人难以置信

　marine life is incredibly rich and varied

10.大约30亿年前　 about three billion years ago

9.从中受益　　　　 benefit from

8.用这种方法使用水use water in this way

7.提出　　　 come up with

6.把杯子翻转 turn the glass upside down

5.保护我们这个星球上的水

protect the water on our planet

4.把淡水装入杯子 fill one glass with fresh water

3.把一支粉笔放入水中

put a piece of chalk in water