英语语法分析

Twenty million years ago, Idaho was populated by dense primordial forest.

两千万年前，爱达荷州遍布着茂密的原始森林。

《柯林斯英汉双解大词典》

It is hypothesized that the primordial cloud of dust and gas from which all the planets are thought to have condensed had a composition somewhat similar to that of Jupiter.

据推测，所有行星都是由尘埃和气体组成的原始云团凝聚而成，其组成与木星的组成有些相似。

Twenty million years ago, Idaho was not the arid place it is now. Rather, it was warm and damp, populated by dense primordial forest.

2000万年前，爱达荷州不像现在这样干旱。确切地说，它那时温暖潮湿，生长着茂密的原始森林。

《柯林斯英汉双解大词典》