well-kept

You'd better keep the two aggressive boys apart.

你最好把那两个好斗的男孩分开。

I was amazed at how well the hair kept its shape.

惊诧于发型持得如此之好。

I’m not sure about Johnson—we’d better keep tabs on him until we know we can trust him.

对约翰逊不太放心——们最好先观察他一段时间，们确信可以信任他。