That murder was a mystery in a blue moon, but a clever detective cleared it up.

那次谋杀案长期以来一直是个谜，后来有个机灵的侦探揭开了真相。

youdao

That murder was a mystery in a blue moon, but a clever detective cleared it up.

那次谋杀案长期以来一直是个谜，后来有个机灵的侦探揭开了真相。

youdao