spoil

如果你现在吃蛋糕，会破坏你的食欲。

You'll ___spoil your appetite if you have cake now.

他努力不让坏消息毁了他的夜晚。

He tried not to let the bad news ___spoil his evening.

我不想宠坏我的孩子，所以我制定了明确的规则。

I don't want to ___spoil my kids, so I set clear rules.