He prowled around the room, not sure what he was looking for or even why he was there.

他在房间里悄悄地走来走去，不知道自己在找什么，甚至不知道自己为什么在那里。

《柯林斯英汉双解大词典》

Again, he wouldn't know what he was looking for.

又一次，他不知道自己在寻找什么。

youdao

He knew how to use it and he knew what he was looking for.

他知道如何使用，而且知道想看什么？

youdao

I knew him well enough to know what he was looking for in a WHCF.

我也很了解他,我知道他需要怎样的办公室主任。

普林斯顿公开课 - 国际座谈会课程节选

He knew how to use it and he knew what he was looking for.

他知道如何使用,而且知道想看什么

耶鲁公开课 - 欧洲文明课程节选

He poked his head outside, not knowing what he was looking for.

CNN: SHARE THIS

The tiger had no destination, only the constant tug of self-preservation in the pit of his stomach, some vague, inborn sense of what he was looking for, which carried him onward.

NEWYORKER: The Tiger��s Wife

There have been plenty of times when he has lost his way, or failed to find what he was looking for, or just given up because the trek was too long.

BBC: Discovering an unseen urban underworld