blunderer

Chloe had a friend at work who had a history of relationships with unsuitable types. A courier was the current blunderer.

克洛艾有个工作伙伴总是爱上不适合自己的人，爱的信使在玩弄这位感情的牺牲品。

John is a bit of a dangerous blunderer.

约翰是一个很危险而且经常坏事的人。