After comparing with former exploration results, the authors found out the former cognition difference, thus hydrogeological condition cognition will be improved during next level coal mining.

在与以往勘探成果进行对比后，找出了以往认识上存在的差距，提高了进行下一水平开采在水文地质条件上的认识程度。

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The greatest buried depth of strata of the former during geological history should be restored according to the eroded thickness, otherwise it will bring adverse effect on the petroleum exploration.

前者必须根据剥蚀厚度恢复地层在地史时期的最大埋深，否则将会对油气的勘探带来不良影响。

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In subsequent years, the former Soviet Union and Russia in manned spaceflight and the exploration of deep space on the left and many indelible imprint.

在以后的岁月中，原苏联和俄罗斯在载人航天、深空探测之路上又留下了诸多不可磨灭的印记。

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David Rainey, BP's former vice president of exploration for the Gulf of Mexico, was charged with withholding information from Congress about the amount of oil that was gushing from the well.

NPR: Judge OKs $4B BP Oil Spill Criminal Settlement

Exploration work at a former tin mine in Cornwall may stop because of rising costs concerns, investors say.

BBC: South Crofty tin mine exploration 'could stop'

Leading the campaign for a global response to NEOs and a closer exploration of their physical make up is former astronaut Russell Schweickart, who piloted the lunar module of Apollo 9 in 1969.

CNN: Space's threat to civilization