英语翻译

问题描述:

英语翻译
turn on their hand

应该是拼错了一个词.原句应该是 ...been turned on their HEADS.
to turn sth on its head 有彻底改变某件事物的意思.这句话是说许多美国学生发现他们午餐菜谱彻底改头换面了.