gǔ / shī / zhōng / de / xī / xī / cháng / yòng / lái / biǎo / shì / měi / yí / gè / yè / wǎn

古诗中的“昔昔”常用来表示每一个夜晚。

In ancient poetry, “昔昔” is often used to mean every night.