There are reports that we've not confirmed yet that he did fire a shot when he came in.

有未经证实的报道称，他走进大楼的时候已经开枪。

youdao

This expression refers to encounters between ships of hostile nations. One ship might fire a shot at another, not in order to hit it, but to warn it to move.

这个表达源于敌对国船只在海上相遇时，一方可能向另一方鸣炮，不是为了击中目标，而是警告其快速离开。

youdao

Log cottages are sinking into a soil which gives up evidence of the siege: cannon shot, wooden shovels, barley blackened by fire. A pair of noisy Amur falcons nests in an oak on the escarpment.

木制的房子慢慢地陷入了泥土，显示着那曾经的包围战留下来的痕迹：炮弹孔，木铲，被战火烧黑的大麦，还有一对吵闹的黑龙江猎鹰巢在悬崖上的一棵橡树上。

youdao

Johnson ducked and lunged at Corkins before he could fire a shot, according to prosecutors.

CNN: STORY HIGHLIGHTS

More poor marking allowed Trezeguet time first to fire a shot against the post, and then to smash the rebound back into the opposite corner.

BBC: Juventus 3-1 Fulham

At the other end, Hleb released Jerome, who recovered from an initial stumble to fire a shot, which was well parried by Kingson at his near post.

BBC: Blackpool 1-2 Birmingham