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ecologists examining an abandoned pit mine. ecosystem care and sustainability. make a change. - engineering geology stock videos & royalty-free footage00:22
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asian women environmentalists engineering working at pit mine using digital tablet take note for analyze and develop environment better - engineering geology stock videos & royalty-free footage00:14
engineer working with drone check windmills in wind turbine farm, green energy concept. - engineering geology stock videos & royalty-free footage00:06
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asian women environmentalists engineering working at pit mine using digital tablet take note for analyze and develop environment better - engineering geology stock videos & royalty-free footage00:15
engineer working with drone check windmills in wind turbine farm, green energy concept. - engineering geology stock videos & royalty-free footage00:09
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liu jianjun, chief designer of the tianwen 1 mission's ground system, speaks to cctv on august 17, 2021 in beijing, china. china's tianwen 1 mars... - engineering geology stock videos & royalty-free footage02:27
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