/ˌʌpsaɪd ˈdaʊn ||; ˌʌpsaɪd ˈdaυn/adv adjwith the top part turned to the bottom 上下颠倒；倒置；倒挂:
You're holding the picture upside down. 你将图画拿倒了。 turn sth upside down 1 to make a place untidy when looking for sth （为寻找某物）将某处弄得乱七八糟: I had to turn the house upside down looking for my keys. 我把家里翻了个底朝天，寻找我的钥匙。
2 to cause large changes and confusion in a person's life 使（个人生活）发生巨大变化或乱作一团: His sudden death turned her world upside down. 他的突然死去彻底改变了她的生活。