如果你不知道这个单词的意思,就查一下字典。
If you don't know what the word means, ___look ___it ___up in a dictionary.
我经常在网上查询新词汇来提高我的英语水平。
I often ___look ___up new vocabulary online to improve my English.
你能帮我查一下去伦敦的火车时刻吗?
Can you ___look ___up the train times to London for me?