一声号令 meaning in Chinese

issue an order

His charge set me off like the lead car in just such a rally , and dazhuangke was quickly in my sights . there i found a little surprise awaiting
他的一声号令让我成了拉力赛中的领头汽车。不久我就见到了大庄科镇。我发现了一些惊喜。
Athletes would scamper up the bamboo bun towers and grab as many buns as possible . the buns would then be sold or distributed to those who did not join in the competition
一声号令后，青年们就会爬上包山，尽他们的所能抢夺包子，三座包山上数以万计的包子在数分钟内便一扫而空，而抢到的包子则会分派给其他居民。