There is often a deposit of sand and mud at the mouth of a river.

河口常有泥沙的沉淀。

There, at the mouth of a river, the fast-flowing water slows abruptly, and the well-rounded sand drops out.

在那里，在河口，湍急的水流骤然变慢，圆润的沙子掉了出来。

Suddenly the land opened right ahead of her. She was coming to the mouth of a river.

突然间，陆地展现在她的正前方。她来到了一个河口。

The next suffix we have is " -mouth" , which means the mouth of a river, which is where the river - where a river meets the sea.

我们的下一个后缀是“-mouth” ，意思是河口，也就是河流汇入大海的地方。