“啊——我不知道呀！” 她嘟哝着说。

O - I don't know!' she murmured.

youdao

如果你有手机，打给你的伙伴，或者干脆假装打电话：“是的，可是我想要它很久了……我不知道呀，好吧，嗯……”？

If you have a cell phone, pull it out and call your partner in crime, or even fake the call if you have to: "Yes, but it's what I've been looking for."..

youdao

你猜我刚才看见谁了，玛吉！你难道不知道—吉姆的妻子呀。

Guess who I've just seen? Maggie! You know—Jim's wife.

《牛津词典》