in that case那样的话;那样的话;在那种情况下；既然如此；假使那样的话

if that happens or has happened; if that is the situation

You say in that case or in which case to indicate that what you are going to say is true if the possible situation that has just been mentioned actually exists.

1

In that case, we won't wait any longer.

那我们就不再等了。

《汉英大词典》

2

In that case he and she must have plotted this together.

在这件事上，分明是他在与她通同作弊。

《汉英大词典》

3

In that case, I'll go.

要是这么着，那我就去吧。

《汉英大词典》

4

Perhaps you've some doubts about the attack. In that case it may interest you to know thatMiss Woods witnessed it

你也许对这起袭击还有些怀疑。那么如果我告诉你伍兹小姐亲眼目睹了这起事件，你可能会感兴趣。

《柯林斯高阶英汉双解学习词典》

5. ‘I've made up my mind.’ ‘In that case, there's no point discussing it.’

“我已经拿定主意。”“ 既然如此，讨论这件事就毫无意义了。”

6. Perhaps you've some doubts about the attack. In that case it may interest you to know that Miss Woods witnessed it...

你也许对这起袭击还有些怀疑。那么如果我告诉你伍兹小姐亲眼目睹了这起事件，你可能会感兴趣。