upside down的意思如下：
英语 upside down 翻译为中文意思是颠倒的，倒置的。例如，The painting was hung upside down.这幅画挂颠倒了。
upside down
[英][ˈʌpˌsaɪd daun][美][ˈʌpˌsaɪd daʊn]
adv.颠倒，倒转; 混乱地; 冠履倒易;混乱; 倒扣; 头朝下;
形近词：Upside Down
adj. 颠倒的;乱七八糟的;混乱的。
[例句]
1、the cup is filled with water.
2、he turns the book upside down.
3、i'm not sure that he will come to party tonight.
4、The close button is on the right side up of the screen.
5、we should use this scientific method to learn.
