put it in upside down里upside down是副词,为什么跟在in这个介词后面?

put it in upside down里upside down是副词,为什么跟在in这个介词后面? "UPSIDE DOWN upside down 收集跟upside down类似的短语 请问upside down upside down 歌词翻译 turn upside down stand upside down turn around upside down 英语 turn upside down put their on the desk with upside down哪里有错 put them on the desk with upside down咋翻译