gun-target line

例句：

1. 1. The soldiers lined up in neat rows on the parade ground.
   士兵们整齐地排成一排在阅兵场上。
2. 2. The policeman drew a gun-target line across the road to stop traffic.
   警察在马路上画了一条枪靶线来阻止交通。
3. 3.The athletes lined up along the gun-target line for the final round of the competition.
   运动员们在枪靶线上排队，准备参加比赛的最后阶段。