Today I worry about my back. Very sore, numbness is at knee. Wonder what happen if surgery not work. What would I do for work? Would I just work at home? How long would I work? Easier in China, lower cost of living?的翻译：什么意思？中文翻译英文，英文翻译中文，怎么说？

今天，我担心我的背。非常疼痛，麻木是膝盖。不知发生什么，如果手术不工作。我会做什么工作？我只是在家工作？我会工作多久？在中国更容易，降低生活成本？