The cannon-shot was followed by a volley of small arms.
炮声过后，又是一排枪声。
2
The cannon-shot was followed after a considerable interval by a volley of small arms.
炮声过后，在隔了相当长的间歇之后，又是一排枪声。
3
Escape velocity is simply the speed of an object that's shot out of a cannon the minimum initial speed so that the object could later escape Earth's gravity on its own.