But it soon became clear that these big animals were only part of the story.但他们很快发现那些大型动物只是一部分

part of一部分

This piece of glass seems to be part of a lamp.

这片玻璃似乎是一盏灯的一部分。

He salted away part of his wages each month.

他每月把工资的一部分储存起来。

If you look down at your feet, you may see them.如果你看看脚下你就会看见它们

look down俯视

The director look down at the actor from the dolly.

导演从摄影车上看下面的演员。

Walking by here and there, an ant, a little beetle...走来走去，一只蚂蚁，一只小甲虫

walk by走过 ...

I often walk by the sea to commune with nature.

我常在海滨漫步,与大自然神交。

I saw Xiao Yang walking by, shouldering two hoes.

我看到小扬扛着两把锄头从旁走过。