他为什么不能说点重要的、有新意的东西，而不只是喋喋不休地讲些陈词滥调呢？

Why couldn't he say something vital and original instead of just spouting the same old platitudes?

《柯林斯英汉双解大词典》

只要一开口就会喋喋不休地讲几个小时。

Once she began to speak, the old woman would run on for hours.

youdao

他喋喋不休地给我讲他第一任妻子的事。

He talked to me interminably about his first wife.

《柯林斯英汉双解大词典》