My date from last night was such a Debbie downer that I went home with a heavy heart!

我昨天晚上的约会对象是个阴沉丧气的人以至于我带着沉重的心情回家。

I don't want to be a Debbie Downer, but I want you to have full information before making a final decision.

我不想成为一个黛比唐纳，但我希望你能有充分的信息，然后才作出最后决定。

Debbie Downer: Every other word coming out of her mouth might be a complaint, but don't let it get you down.

抱怨狂：几乎每句从她嘴里说出来的话都是抱怨，但不要为此令自己心情不好。