I looked up and down the corridor.

我来回扫视着走廊。

《牛津词典》

I looked up. It was the girl I helped that morning.

我抬起头。是那天早上我帮助的那个女孩。

youdao

When I looked up at the sky, I noticed the sky was beautiful and peaceful.

当我抬头看天空时，我注意到天空是美丽又宁静的。

youdao

I looked up to the sky and saw the Red Planet Mars.

VOA: special.2010.07.31

In the second poem here, "I Looked Up From My Writing," the poet, the first person, is being interrupted at his desk at night.

在第二首诗中“从我的写作中来看“,诗人也是第一人称，夜晚在书桌前被打扰。

耶鲁公开课 - 现代诗歌课程节选

So, I went to the library and I looked up Advances in Molten Salt Chemistry volume six because there's an article in there about the chemistry and electrochemistry of magnesium production.

所以我去了趟图书馆，查阅了,第六版的《高级熔融态盐化学》,因为那里面有一篇关于生产镁的,化学和电化学的文章。

麻省理工公开课 - 固态化学导论课程节选

My wife and I looked up and wondered, 'Did it get here six hours early?

CNN: 12 bodies recovered, 60 unaccounted for after Texas blast

As I looked up, I expected it to be a friendly journalist I'd spoken to on previous trips.

BBC: man Robin Chipperfield on Froch-watch

In short, I looked up at the sky and saw the storm brewing.

CNN: Bad laws would hurt good drones