tóng / nián / de / kuài / lè / shí / guāng / yī / qù / bù / fù / fǎn / wǒ / men / yīng / gāi / zhēn / xī / xiàn / zài

童年的快乐时光一去不复返，我们应该珍惜现在。

The happy days of childhood are gone forever, so we should cherish the present.