There aren't many pandas left on the earth.

问题描述:

There aren't many pandas left on the earth.

留下 整句话的意思是地球上已经没有剩下很多熊猫了

剩下,后置定语,修饰pandas, 地球上没有多少熊猫了。
例如: there is not much water left in the bottle.
I don't have much money left.

本意是遗留、留下,这里可以译为 存活

地球上,大熊猫的数量不是很多。

There aren't many pandas left on the earth.中left是“剩下,留下”的意思