Definition
To do something at the last possible moment before it is too late.
在最後關頭
We submitted the report under the wire, just minutes before the deadline.
我們在最後一刻提交了報告，就在截止期限前幾分鐘。
He scored the goal under the wire, right at the final second of the match.
他在比賽的最後一刻進球，剛好在最後一秒。
She always leaves things to the last minute, consistently getting things done under the wire.
她總是等到最後一刻，總是在最後一刻完成事情。