on the touchline
touchline 是英式说法，多用于足球或橄榄球；美式英语更常说 sideline。
The coach stood on the touchline, shouting instructions to the players.
教练站在边线上，向球员们大声下达指令。
边线
touchlines — plural of touchline
球场边界线之一
either of the sidelines in soccer or rugby
球场边界线之一
One of the lines that mark the border limits of the pitch.
The coach stood on the touchline, shouting instructions to the players.
教练站在边线上，向球员们大声喊叫指示。
用法提示：touchline 在此句中作名词，指足球场的边线。
The ball went out of play over the touchline, so the referee awarded a throw-in.
球越过了边线出界，所以裁判判罚了掷界外球。
用法提示：touchline 在此句中作名词，指球场的边线。
Fans lined the touchline to cheer their team during the final match.
球迷们排在边线旁，在决赛中为他们的球队加油。
用法提示：touchline 在此句中作名词，指橄榄球场的边线。
touchline 是英式说法，多用于足球或橄榄球；美式英语更常说 sideline。
The coach stood on the touchline, shouting instructions to the players.
教练站在边线上，向球员们大声下达指令。
The referee ran along the touchline to keep up with the play.
裁判沿着边线跑动，以便跟上比赛节奏。
go over the touchline 指球越过边线出界。
The ball went over the touchline, so the other team was awarded a throw-in.
球出了边线，因此判给另一队一个界外球。
仅在指球场侧边线时可互换；sideline 另有“场边区域”等义项，而 touchline 通常专指足球/橄榄球的边线。
grammar · medium
易错句子There are two touchline on a soccer field.
正确表达There are two touchlines on a soccer field.
touchline 是可数名词，表示“边线”；指多条边线时应用复数形式 touchlines。
grammar · medium
易错句子The ball went over touchline.
正确表达The ball went over the touchline.
touchline 是单数可数名词，指具体某条边线时前需加定冠词 the，不能省略。
sideline 用于多种运动（如美式橄榄球、篮球），而 touchline 专指足球或橄榄球两侧的边线。
touchline 是球场边线本身，而 touch 指球越过 touchline 后形成的出界状态。
boundary 泛指任何区域的边界，不专指球场；touchline 特指足球或橄榄球场地两侧的边线。
在边线上
The coach was standing on the touchline, shouting instructions.
教练站在边线上大声指挥。
沿着边线
The winger raced along the touchline and crossed the ball.
边锋沿着边线快速奔跑并传中。
禁赛令（禁止教练在场边指挥）
He received a three-match touchline ban for arguing with the referee.
他因与裁判争执而被处以三场边线禁赛令。
边线旁的座位
We bought touchline seats for the rugby match.
我们买了橄榄球赛的边线座位。
越过边线（出界）
The defender kicked the ball over the touchline.
后卫将球踢出了边线。
Dictionary facts from ECDICT, WIKTIONARY.