1. There was green scum over the pond.

2. Scum the bubble when the porridge is boiling.

3. Scum like that should be locked away!

4. Skim the scum off the jam and let it cool.

5. The lake near the factory was covered with grey, foul-smelling scum.

6. Those racist scum have been attacking Pakistanis.

7. I wouldn't have anything to do with those scum.

8. Don't waste your sympathy on scum like that.

9. There is a ring of scum in the washbasin.

10. Someone had scrawled "Scum" on his car.

11. These so - called football supporters are scum.

12. These men are the scum of the earth.

13. He's lower than pond scum.

14. Drug dealers are the scum of the earth .

15. People who organize dog fights are scum in my opinion!

16. A thick layer of dirt scummed the surface of the lake.

17. Skim off any scum.

18. You won't hurl yourself away on such a scum, will you?

19. People like that are the scum of the earth .

19. Wish you can benefit from our online sentence dictionary and make progress day by day!

20. Society is like a stew. If you don't stir it up every once in a while then a layer of scum floats to the top. Edward Abbey 

21. This paper analyzes the essential scumming reasons for magnesite product and every kind of modified measures and results used normally now.

22. Through test and research for many new mixing active modifier added and new treatment method, the appearance of scumming for magnesite product is obviously inhibited on the above base.