Definition
- B2
to retire to bed later than one's usual time
深夜不睡；熬夜
He stayed up working until 3 a.m. last night and feels extremely tired today.
他昨晚熬夜工作到凌晨三点，今天感到非常疲惫。
We plan to stay up to watch the movie since we've been waiting for it for so long.
我们计划熬夜看这部电影，因为我们已经等了很久。
She likes to stay up studying before exams, even though it leaves her drowsy the next day.
她喜欢在考试前熬夜学习，即使这让她第二天昏昏欲睡。
In football, to remain within the same league division without being demoted to a lower one
（足球）俱乐部持续在同一联赛级别而未被降级
The football team successfully stayed up this season without being relegated, much to the fans' delight.
这支足球队本赛季成功保级，没有被降级，让球迷们非常高兴。
Their performance has been outstanding, allowing the club to stay up in the same league division this year.
他们的表现非常出色，使俱乐部能够在今年保持在同一联赛级别。
The club is working hard to stay up and avoid relegation.
俱乐部正在努力保级，避免降级。