求准确翻译

breach 的意思是 “缺口”

step into the breach 直译是 “跳进缺口”,意思是 “补缺”, 或“挺身而出”

I put my energies into stepping into the breach to help those less fortunate than I.

句子是说

我以所有的力量挺身而出帮助那些比我更不幸的人。

希望对你有帮助。