X-time

• n. 发射瞬间；火箭发射的准确时间

X-time的用法和样例：

例句

用作名词 (n.)

1. You know the exact time the vending machines are refilled.
   你知道自动贩卖机更换货物的准确时间。
2. Any man coming on your job during the day, you must take note of the exact time of his arrival.
   白天如有人到你处工作，你必须记下他上工的准确时间。