wǒ / men / ǒu / ěr / huí / wàng / yī / zuó / cái / gèng / dǒng / de / zhēn / xī / yǎn / qián / de / shēng / huó

我们偶尔回望一昨，才更懂得珍惜眼前的生活。

Only by occasionally looking back on former days do we better appreciate the life we have now.