“独力地”常见的英文表达是 “independently” 或 “on one's own”。
independently:强调不依赖他人、自主地完成某事,突出自主性和独立性。例如:She completed the project independently.(她独力地完成了这个项目。 )
on one's own:意思是“独自地;靠自己的力量” ,使用频率也很高。例如:He managed to solve the problem on his own.(他独力地解决了这个问题。 )