look up
表示原先在埋頭幹什麼，之後抬頭看
He looked up from his book as I entered the room.
我進入房間時，他從書本上抬起頭來看了看。
(在詞典、計算機等中)查閱
If there are words you do not understand, look them up in a dictionary.如果有不懂的單詞就查字典。
look up to尊敬;仰視
I look up to him because he is a real artist.
我尊敬他，因為他是個真正的藝術家。
（反義詞）look down
往下看，俯視
They can go up to the tower and look down.
他們可以登上高塔，向下俯視。
look down upon/on sb. (to think that you are better than sb.)瞧不起某人
Never look down on people who are not superior to you.
不要輕視不如你的人。