滔滔不绝 - talk oneself out

After nearly an hour, he had talked himself out. Then we began to ask questions.
-他滔滔不绝的说了将近一个钟头，然后我们才开始发问。


He talked himself out in the meeting, but no one would believe his position.
-他在会议中滔滔不绝的说明他的想法，但是没人相信他所持的立场。


Our English teacher talked herself out in the class, but no one seemed to understand what she said.
-我们的英文老师滔滔不绝的在课堂上讲了一堆话，但是似乎没有人了解她在说什么。



---《流行英文成语》