There could be many reasons and he was not going to waste time speculating on them.

原因可能很多，而他不打算浪费时间猜测这些原因。

Government sources are now openly speculating about a possible successor for Dr. Lawrence.

各官方消息源现在正公开地推测继劳伦斯博士之任的可能人选。

They are speculating on the imponderables of the future.

他们猜测着未来难以估算的事情。

So he spit in contempt on his father's speculating.

因此他轻蔑的唾弃他父亲的投机行为。

And everybody is speculating about the capital.

所有人都在猜会是哪个首都呢。