" Fire in your belly" means you have strong ideas and work to make things happen.

fire in your belly 指的是你拥有强大的信念并努力实现抱负。

So I'll leave you with that and that fire in your belly, that got you here. Keep it, love it.

所以我跟大家说，你们满腔的热情引领你们来到这里的那股力量，坚持并一直热爱它。