I'm of the firm belief that everything happens to one for a reason.

我的坚定信念，一切发生的一个原因只有一个。

youdao

Great work not only by strength to complete, but also by the firm belief.

伟大的作品不只是靠力量完成，更是靠坚定不移的信念。

youdao

Mr Campbell had left most of his things there, as well as the dogs, the cats, the hens and the old brown horse, in the firm belief that he would return.

坎贝尔先生将大部分东西留在了那里，还有狗、猫、母鸡和一匹棕色的老马，他坚信他会回来。

youdao

Slidell returned to the United States,firm in the belief that only force could win the Mexican territories the United States wanted.

VOA: special.2009.02.19

So,first of all, let me assert my firm belief that the only thing we have to fear is fear itself-- nameless,unreasoning,unjustified terror which paralyzes needed efforts to convert retreat into advance."

VOA: special.2011.03.17

So,first of all,let me assert my firm belief that the only thing we have to fear is fear itself - nameless,unreasoning,unjustified terror which paralyzes needed efforts to convert retreat into advance."

VOA: special.2011.05.19

Mr Campbell had left most of his things there in the firm belief that he would return.

ECONOMIST: Mike Campbell

The Office of the Privacy Commissioner of Canada added that it would also continue to monitor the company, but said it did not have the power to issue sanctions despite its belief that the firm was breaking local laws.

BBC: Whatsapp

Veteran Romanian coach Mircea Lucescu is cut from the same cloth as his Arsenal counterpart Arsene Wenger in his firm belief in keeping the ball on the ground and attacking in fluent short-passing moves.

BBC: Arsenal's wounded soldier returns