upside down
adverb & adjective
1- with the upper part where the lower part should be; in an inverted position颠倒（的）, 倒转（的）：
as adv. the bar staff put the chairs upside down on the tables酒吧职员把椅子倒放在桌上
as adj. an upside-down canoe.倾覆的小舟。
1.1
- in or into total disorder or confusion一团糟（的）, 混乱不堪（的）：
as adv. burglars have turned our house upside down.盗贼把我们家翻得乱七八糟。
词源
Middle English: originally up so down, perhaps in the sense 'up as if down'.