Middle Ages: (395 ~ 1500) Period in European history traditionally dated from the fall of the Roman Empire to the dawn of the Renaissance.

中世纪：(395 ~ 1500)欧洲历史上一段时期，传统上是指罗马帝国衰亡到文艺复兴初期这段时间。

youdao

People with DSPS generally fall asleep late at night, often in the pre-dawn hours, and wake in the late morning or in the afternoon.

患有此症的人凡是很晚睡觉，大都要熬到凌晨才会入睡，然后快到午时或者下战书才醒来。

youdao

The mist that drifts away at dawn, leaving but dew in the fields, shall rise and gather into a cloud and then fall down in rain.

拂晓时分散逸的薄雾，仅在旷野上残留着朝露，它将上升，汇聚为云，而后降落成雨。

youdao

Dawn, dusk and mating season in the fall and early winter tend to be especially dangerous times.

WSJ: How to Keep a Deer Out of the Headlights

So here we are at the Mermaid Triathlon in Capitola, CA on a gorgeous fall morning, starting at dawn.

FORBES: Connect