n.废话；蠢话；夸夸其谈；厌烦；烦躁、倦怠；不适；（电影等）不卖座

adj.无趣的；闷闷不乐的

That's just a lot of blah. 那纯粹都是胡扯。

There he goes, blah blah blah, talking nonsense as usual. 他又来这一套了，夸夸其谈，像往常一样谈来谈去都是废话。

I felt real blah when I woke up this morning. 今晨醒来时,我觉得很无聊。

Are you feeling blah about your work and life? 你是否对你的生活和工作感到乏味？

I don't know what's wrong with me; I just feel kind of blah. 我不知道哪儿不对劲，我只是觉得有些不舒服。