Definition
to be in a position behind a competitor in a race or competition
（競賽中）落後
Our team was trailing for the entire first half of the game.
我們的球隊在整個上半場都處於落後狀態。
Despite a slow start, they managed to overtake their competitors who had been trailing them for much of the race.
儘管起步較慢，他們還是成功超越了在比賽中大部分時間落後的競爭對手。
The company has been trailing behind its main competitor in terms of market share.
該公司在市場份額方面一直落後於其主要競爭對手。