without trying，how can we keep up with the aging speed of the parents
有两种翻译方法
* How can we catch up with the speed at which our parents become old if we don't work hard?
* How can we catch up with the speed our parents become old at unless we work hard?
If we don't make efforts/go all out / do our best, how can we be faced with the quickly ageing of our parents?
或者：How can we catch up with the quickly ageing speed of our parents if we don't make efforts/go all out / do our best?
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