If you describe a style, colour, or effect as understated, you mean that it is not obvious.
例句
I have always liked understated clothes — simple shapes which take a lot of hard work to get right.我一直喜歡不太惹眼的衣服——簡單的款式需要下大工夫才能弄得恰到好處。...his typically understated humour.他那典型的低調幽默