52 Valleys-Low

Valleys FOCUS Question What are valleys, and how do they form?

什么是谷，它们是如何形成的?

A valley is a low place between two hills or mountains. Many valleys have water in the bottom. The water is a river.

山谷是两座小山或山之间的低地。 许多山谷底部都有水。 水是一条河。

The river in a valley flows downhill. The water moves dirt. It can move big trees. It can even move heavy rocks!

山谷中的河流往下坡流。 水冲走泥土。它可以移动大树。 它甚至可以移动沉重的岩石!

The water moves some rocks and wears away others. The valley gets deeper.

水移动了一些岩石，也磨损了另一些。 山谷越来越深。

Rivers can make valleys shaped like the letter V. These valleys have steep sides. The sides can be very high!

河流可以把山谷塑造成字母V的形状。 这些山谷两边都很陡峭。 两边可以很高!

Long ago many places were covered with ice. The ice moved like a river. But it moved very slowly.

很久以前，许多地方都被冰覆盖着。 冰像河流一样流动。 但它移动得非常缓慢。