英语语法分析

Have you ever heard of a pontoon bridge?

你听说过浮桥吗？

A stabilizer for a canoe; spars attach to a shaped log or pontoon parallel to the hull.

一种轻舟的稳定器；定在成型圆木的桅杆或与船体平行的浮筒。

A German motorized artillery column crossing the Don river by means of a pontoon bridge on July 31, 1942.

1942年7月31日，一支德国摩托化炮兵纵队正在通过浮桥横渡顿河。