gǔ / rén / cháng / cháng / tí / xǐng / wǒ / men / xī / cùn / yīn / bú / yào / bǎ / shí / jiān / làng / fèi / zài / wú / yì / yì / de / shì / qing / shàng

古人常常提醒我们惜寸阴，不要把时间浪费在无意义的事情上。

The ancients often reminded us to value every moment and not waste time on meaningless things.