Easy, I looked it up on the Internet.

很简单，我在网上查的。

I looked it up again.

我再次查找了它。

I looked it up and felt it fitted.

我查资料，感觉（无性）很符合我。

Leo did not know the word, so he looked it up in the dictionary.

利奥不懂那个词的意思，所以他查词典。

As the Frenchman didn't know much English, he looked it up in his dictionary.

由于这个法国人英语懂得不多，便拿出字典查了这个单词。