We are the dregs of society.

我们真是社会的渣滓。

The spam folder is the grimiest, grittiest part of town, full of lowlifes and junkies, the underbelly of the underbelly.

件文件夹是这座城市最肮脏、最混乱的角落，充斥着社会渣滓和瘾子，是底层中的底层。

The man who came up the staircase with a furtive, soft-footed tread was quite unknown to Tommy. He was obviously of the very dregs of society.

汤米完全不认识那个偷偷摸摸地走的人。他显然是社会的渣滓。

All the blame for lack of success should not have been attached to the duke alone, because the army he had under his command was made up from what is commonly described as the scum of the earth.

不应该把失败的全部责任都归咎于公爵，因为他指挥的军队是由一般所说的社会渣滓组成的。