经济类的英文：
economic algae

economic是什么意思：
adj. 经济上的；经济学的

an economical shopper;
精打细算的购物者;

economic planning
制订经济计划

Economics is the base and politics is the concentrated expression of economics
经济是基础，政治则是经济的集中表现。

economics of different sectors and economics ofspecialized fields
部门经济学和专业经济学

algae是什么意思：
n. 水藻，藻类

Pigments in the algae create their flamboyant colour.
藻类中的色素还给予了它们艳丽的色彩。

Any of the brown algae that make up the genus Sargassum.
马尾藻类海草家族的任何一种褐色海藻。

During summer control of slime and algae may be required
在夏天还要求控制污泥和藻类。

Do you think of algae as gloopy green slime?
你觉得海藻像是用软胶厚涂的绿色软泥吗？

Harmful algae blooms are a common cause of fish kills.
有害藻类大量繁殖是鱼死亡的常见原因。