upside down
🇺🇸
/ˌʌpsaɪd ˈdaʊn/
🇬🇧
/ˌʌpsaɪd ˈdaʊn/
with the top part at the bottom and the bottom part at the top
The child held the book upside down while trying to read it.
那个孩子试图阅读时把书倒着拿。