名詞 dreg:

1. a small amount of residue

1. The dregs settled and the liquid became clear.
   渣滓沉淀下來，液體變清了。
2. The dregs have settled at the bottom of the bottle.
   渣滓都沉到瓶底了。
3. These criminals are the dregs of society.
   這些罪犯都是社會的渣滓。

dreg

n.（名詞）
The sediment in a liquid; lees. Often used in the plural.
沉渣：液體中的沉淀物；沉渣。常用復(fù)數(shù)
The basest or least desirable portion. Often used in the plural:
糟粕：最低劣或最不需要的部分。常用復(fù)數(shù)：
例句：
the dregs of humanity.
人渣

A small amount; a residue.
少量；殘余

來源：
Middle English dreg
中古英語 dreg
from Old Norse dregg
源自 古斯堪的納維亞語 dregg