凯茜总是很好地利用时间来学习，哪怕是在午休的时候。
Cathy always makes good use of her time to study, even during her lunch break.
因此，我们年轻时应当很好地利用时间努力学习。
Therefore, we must make good use of our time and study hard when we am young.
因此，我们年轻时应当很好地利用时间努力学习。
Therefore, we must make good use of our time and study hard when we am young.
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