Cách sử dụng
The expression "skim off" means to remove the top layer of something, typically a liquid, with a spoon or ladle. It is often used when cooking to remove excess fat or impurities from a soup or stew. For example, you can skim off the foam that rises to the top of boiling water or skim off the fat from a pot of chili. The phrase can also be used figuratively to describe taking the best or most valuable parts of something.