under the wire
在最后一刻；在最后限期之前
口语·强调勉强赶上截止时间
英文释义
just in time; narrowly meeting a deadline or completing a task at the last minute
例句
She submitted her assignment just under the wire before the deadline.
典故来源
源自赛马或赛跑中，选手在终点线（wire）前最后一刻冲过。