economical effects的用法和样例:
例句
- A close relationship might exist between the thrombolite structure and ecological effects of grazing and burrowing metazoans.
当前的资料表明,在凝块石构造与食草和钻孔动物生态效应之间似乎存在着一种紧密的联系。 - The strategy of protection and development of evergreen broadleaf tree is put forward, based on its ecological effects on four streams and one river in Zhangzhou.
笔者就常绿阔叶林对福建漳州四溪一江生态效应,提出保护与发展的策略。