pull a rabbit out of the hat在观看魔术表演时，当魔术师从一个空空的礼帽中突然抓出一只兔子，翻译成中文是：出其不意；做出惊人之举。

【例句】
The caterers really pulled a rabbit out of the hatby producing 100 cupcakes with just 20 minutes' notice.
酒席承办人真是令人出乎意料，只用了20分钟，就准备了100个纸杯蛋糕。

Unless someone can pull a rabbit out of a hat, we're out of solutions.
除非有人能突然找到解决的办法，否则我们就束手无策了。