jump the gun

phr

• ① 【竞赛】赛跑时不等鸣枪而抢先

• ② 过早行动;过早起步
  • The strike was called for Wednesday, but many steelworkers jumped the gun and did not report for work on Tuesday.罢工定在星期三开始,但是许多钢铁工人提前行动,星期二就不上班了。