the ancient Sanmen Lake

• 古三门湖

the ancient Sanmen Lake的用法和样例：

例句

1. Since the sedimentary sequence has persisted from the early Pliocene of Neogene to the end of middle Pleistocene of Quaternary,it is referred to as the Sanmen group.
   鉴于古三门湖沉积地层从晚第三纪上新世早期延续至第四纪中更新世晚期。