windbag:a person who talks too much, and does not say anything important or interesting 夸夸其谈的人;空话连篇的人;话匣子
A: You know what? Howard spent hour talking nonsense to me last night.
你知道吗?霍华德昨晚花了几个小时跟我讲了一大堆废话.
B: You poor guy! Everyone knows he's a real windbag.
你这个可怜的家伙!大家都知道他是个很罗哩巴嗦的人.