un·ex·plored
adjective/ˌʌnɪkˈsplɔːd/
/ˌʌnɪkˈsplɔːrd/
- (of a country or an area of land) that nobody has investigated or put on a map; that has not been explored
无人涉足的；未画进地图的；未经勘察的 - (of an idea, a theory, etc.) that has not yet been examined or discussed carefully and completely
未经彻底研究（或探讨）的