At the moment, the starting gun was fired on this epic show done.

此时此刻，发令枪响了史诗般的表演结束了。

On hearing the shot of the starting gun, I shot from the starting point.

听到枪声，我从起跑线冲出。

The starting gun goes off and so do you— into a wall of creeping runners.

发令枪响了，你也响了——撞上了爬行的人墙。

The National Institute of Standards and Technology (NIST), America's standards agency, has now fired the starting gun for this transition.

美国标准机构美国国家标准与技术研究院（NIST）现已打响了这一转变的发令枪。