"Wait there!" Kathryn rose. "No, on second thought, follow me."

“等等！”凯瑟琳站了起来。“不，转念一想，跟我来吧。”

On second thought, maybe not.

再想想，也许不是这样。

On second thought, don't tell us.

再想一想，不要告诉我们。

I made my decision on second thought.

我重新考虑之后做了决定。

On second thought, I will have a cup.

仔细想过之后，我想我还是要一杯。