Do you know the of this expression?

meaning 含义,意思
翻译：你知道这个词语的【意思】吗?
再问： Mr Boston was so 空 that he hit the car
再答： careless 粗心的
再问： Do you have a 空? I want to print(复印) things
再答： printer 打印机
再问： Her flash cards are ______(difference) from mine.
再答： 你到底要采纳谁的？两个都在同时追问。晕了。。。。。。