“衬托”的意思是用一样东西来突出另一样东西，让它看起来更好、更明显。

The meaning of "衬托" is to use one thing to highlight another, making it look better or more obvious.

我们常常说绿叶衬托红花，就是用绿色让红色更漂亮。

We often say green leaves 衬托 red flowers, meaning using green to make red look more beautiful.