例句：
Brits stayed up a half-hour later to watch it, and then they woke up earlier than usual the next morning thanks to summer nights, the phenomenon in which the sun barely sets in northern countries in the summertime.
英国人熬夜看了半个小时后，第二天早上由于极昼而比平常早起床——极昼指北方国家夏季太阳几乎不落山的现象。
I want to get there before the sun sets.
我想在太阳落山前赶到。
Before the sun sets on the third day.
在第三天太阳落山之前。
Light up when the sun sets. What time will the sun rise?
太阳落下时就点上灯。太阳将在几点钟升起？