residue

US /ˈrez.ə.duː/
UK /ˈrez.ə.duː/
"residue" picture
1.

残留物, 残余, 余渣

a small amount of something that remains after the main part has gone or been taken or used

:
There was a sticky residue left on the counter after the spill.
溢出后,柜台上留下了黏黏的残留物
The chemical left a white powdery residue.
这种化学物质留下了一种白色粉状残留物