可以说 "They talked for a long time." 或 "They had a lengthy conversation."

这个短语的来源可以追溯到拉丁文,"long" 来自拉丁文的 "longus",意思是 "长的","time" 来自拉丁文的 "tempus",意思是 "时间"。

一些英文例句及其中文翻译如下:

They talked for a long time. 他们聊了很久。
They had a lengthy conversation. 他们有一段冗长的谈话。
The meeting lasted for hours. 会议持续了几个小时。
We chatted for hours. 我们聊了几个小时。
The phone call took forever. 那通电话谈了一个世纪。