英语语法分析

The conifer sawflies are important defoliators in Yunnan Province.

松叶蜂是云南省的重要食叶性害虫。

The conifer sawflies are economically important defoliators in the forest in Yunnan Province.

松叶蜂是云南省森林的重要害虫。

Central-south and East of Shandong are the two distribution centers of sawflies in the Province.

鲁中南及鲁东地区是山东省叶蜂的两个分布中心。