在那之后，我们去了公园。

After that, we went to the park.

在那之后，他开始学习钢琴。

After that, he started learning piano.

在那之后，她每天都去跑步。

After that, she went jogging every day.

在那之后，我们再也没有见过他。

After that, we never saw him again.

在那之后，他们决定搬到新城市。

After that, they decided to move to a new city.

在那之后，我将在午餐时和他开会。

After that, I'll have a meeting with him over lunch.

在那之后，我发现了其他有趣的事情做。

After that, I found other interesting things to do.

在那之后，猎户座想要产生更深刻的影响。

After that, Orion wanted to make an even bigger impact (影响).

在那之后，每个发射工具必须能够安全落入地球大气层。

Each tool must be built to fall safely into the earth's atmosphere after that time.

在那之后，谁知道呢？

After that, who knows?