But still exist problems of low exploration intensity and low integrated study extent and so on. To raise coalresourcesexploration intensity is urgent affair in Inner Mongolia.
但存在勘查程度低、综合研究程度差等问题，提高内蒙古煤炭资源的勘查程度是当务之急。
2
According to him, the main stages in human evolution are measured by the use and exploration of the Earth's resources by humans: the Stone age, Metal, Coal, Oil, etc.
根据他的说法，人类的进化阶段由人类利用和勘探的地球资源来划分：石器、铁器、煤炭、石油等等。
3
Coal geological data are historical record of geological exploration, and also are the most precious resources of information in country.