Definition: certain or fixed and not likely to change Level: B2
我们还没有任何确定的周末计划。
We don't have any ___firm plans for the weekend yet.
我是平等权利的坚定信徒。
I'm a ___firm believer in equal rights.
我坚信我会利用我所有的经验。
It is my ___firm belief that I would use all the experience I have.
