Is your boss a blithering idiot ?

老板是个喋喋不休的蠢蛋？

I spent more than two hours on listening to a blithering report yesterday afternoon .

昨天下午我花了两个多小时听了个无聊的报告。

You blithering idiot ! You could have killed me with that knife .

你这个十足的傻瓜！你差点用那把刀杀了我。

You blithering idiot ! You 've buttered the tablecloth !

你这个大笨蛋，把黄油都涂到桌布上了！

She is alway blithering about some problems of hers .

她总是唠叨不休地讲她(个人)的一些问题。