Wiping是什么意思？

If you wipe something, you rub its surface to remove dirt or liquid from it.

If you wipe dirt or liquid from something, you remove it, for example by using a cloth or your hand.

A wipe is a small moist cloth for cleaning things and is designed to be used only once.

If you say that something wipes the smile off someone's face, you mean that it suddenly spoils their enjoyment or removes an advantage that they had and that you are pleased about it.