hey presto
exclamation UK uk/ˌheɪ ˈpres.təʊ/ us/ˌheɪ ˈpres.toʊ/ (US presto)
（表示某事物的出现或发生像变魔术一样迅速或容易）
said when something appears or happens so quickly or easily that it seems to be magic
You put your money in the machine and, hey presto, the coffee comes out! 把钱投到机器里，嘿，咖啡就出来了！