n.拾荒者；食腐動物；清除劑
He's just fit for a job as scavenger. 他只配當個清道夫。
The shark is usually a scavenger rather than a hunter. 鯊魚通常是一個清道夫，而不是一個獵人。
Proanthocyanidin is a effective natural free radical scavenger. 原花青素是一種天然有效的自由基清除劑。
