Correct or improve the translation of the following Chinese sent

Correct or improve the translation of the following Chinese sentences.原文：日子很快过去了，她的做工丝毫没有松懈，食物不论，力气是不惜的。 译文：Days passed quickly. She went on working as hard as ever, not caring what she ate, never sparing her strength.改译：
【正确答案】：

DAYS PASSED QUICKLY. SHE WENT ON WORKING AS HARD AS EVER, NOT CARING WHAT SHE ATE, NEVER SPARING HERSELF.

【题目解析】：not sparing herself意为不惜力气，不能译作not sparing her strength。