1. Faisal - The first thing is, it`s a dam. It impounds the river and it creates an open body of water which is an artificial reservoir or a lake and that itself, being exposed to the sky and the sun, creates a huge source for moisture in the air.
Faisal -首先，它是一座坝，它可以拦截河流，然后形成一大片的水域即人造湖泊，大片的水面暴露在天空和太阳之下，在空气中形成很大湿气源。
2. The model contains threeprimary components:hillslope, channel and impounds such as check dam.
模型包括坡面、沟道和积水区（因谷坊和淤地坝等工程措施修建而形成）三部分。