Exercise will not only lower blood pressure but possibly protect against heart attacks.

运动不仅会降低血压，而且可能会防止心脏病发作。

They were casually dressed; possibly students.

他们穿着随意，可能是学生。

a painful and possibly fatal operation.

一次痛苦而且有可能致命的手术。

Do you think that he could possibly be right?

你认为他有可能是对的吗？

It was the most unexpected piece of news one could possibly imagine.

可以想像，这是最出人意料的一则消息。

They've done everything they can possibly think of.

凡是可能想得到的，他们都已经做了。

No I really can't possibly answer that!

不，我真的无法回答那个问题。