英语语法分析

Role of the Conestoga Wagon in American history.

康内斯托加式宽轮篷车在美国历史中的角色。

The peak years of use for the Conestoga wagons were from 1820 to 1840.

康内斯托加式宽轮篷车的巅峰时段是1820至1840年间。

Covered with canvas and drawn by four to six horses, the Conestoga wagon rivaled the log cabin as the primary symbol of the pioneer.

译覆盖着帆布，由四至六匹马拉动，大篷马车足以同开拓者的主要标志——木舱相匹敌。