scavenger

n. 清除剂(清道工,选池,基接受体)

He is just fit for a job as scavenger.

他正好当个清道夫之职。

A small fraction of the creatures that die are preserved in this way before decay sets in or, even more likely, before scavengers eat them.

只有一小部分死掉的生物在开始腐烂前，或者更可能的情况是，在食腐动物吃掉它们之前如此地保存起来。