green alga

例句：

1. 1. The greenalgae in the pond are asource of food for many fish species.
   池塘中的绿藻是许多鱼类的食物来源。
2. 2. Greenalgae play an important role inthe carbon cycle.
   绿藻在碳循环中起着重要的作用。
3. 3. The alga farm is oneof the largest in the world, producingbillions of pounds of protein each year.
   这个藻类农场是世界上最大的之一，每年生产数十亿磅的蛋白质。