Sleep is something that has really been an unexplored topic cross-culturally.
在各种文化中，睡眠是一个未被探索的话题。
2
Archaeologist Bill Kelso and his team discovered the church in a previously unexplored area of the fort in Jamestown.
考古学家比尔·凯尔索和他的团队在詹姆斯敦之前未开发的的堡垒区域发现了这座教堂。
3
There appear to be many unexplored matters about the motivation to reflect—for example, the value of externally motivated reflection as opposed to that of teachers who might reflect by habit.