a-ha (interj.)

也 aha，表示惊讶或发现的欣喜的感叹词，14世纪晚期，来自 ah + ha。

This seely widewe and hire doughtres two ... cryden out "harrow!" and "weloway! A ha! þe fox!" and after him they ran [Chaucer]

这个可怜的寡妇和她的两个女儿...喊叫着“哈罗！”和“威洛维！啊哈！狐狸！”然后他们追赶着他 [乔叟]