我劝说了半天，他才肯了。

He did not agree until I had talked to him for a long time.

《新英汉大辞典》

说了半天，我一口还没有吃上呢。

After all the talk, I still haven't tasted a bite.

youdao

说了半天，我们中国可以学会什么？

After all this, what is it that China can learn?

youdao

you're getting those.] There I had her; she yawned and responded: "It's late. I'm tired."

但愿你能领会），这下她半天没说话,过了会儿，她打着哈欠说，太晚了，我睡了“

耶鲁公开课 - 1945年后的美国小说课程节选