riff raff

基本解釋

These people give me the creeps. Riff raff!
這些人使我起雞皮疙瘩。真是一群痞子！
Western Europe may have cheered the revolution, but it fears a flood of riff-raff from the east.
西歐可能會(huì)對(duì)革命歡訢鼓舞，但也擔(dān)心來(lái)自東部的貧民潮。
Littered on the grass, we seemed dingy, urban riff-raff. We defiled the scene, like sardine-tins and paper bags on the seashore.
我們呢，卻好像是一堆骯髒的城市垃圾，被衚亂丟在草地上，如同海灘上的紙袋和沙丁魚(yú)罐頭盒一樣敗壞風(fēng)景。

The privileged few who have doormen in their buildings get to have someone to receive their packages and visitors, and keep the riff raff out of the building.
FORBES: Connect
Mad Decent Signee Riff Raff Has A Plan: Eccentric MC and Internet personality Riff Raff spoke with me about how 2013 will be the year he ascends to the top of the rap pack.
FORBES: A Year in Review
In it, Captain Kirk needs to acquire plague-fighting minerals from the planet Ardana, currently in the middle of a civil uprising against a super wealthy and socially elite class that live in a floating city, far above the riff raff.
FORBES: The Rise And Fears Of The New Elite

If you refer to a group of people as riffraff, you disapprove of them because you think they are not respectable.