exploitation是什么意思？

Antarctica's harsh natural conditions constitute huge obstacles to the exploitation of its resources.

Google's further exploitation of its database.

It is important that we be mindful of the earth, the planet out of which we are born and by which we are nourished, guided, healed-the planet, however, which we have abused to a considerable degree in these past two centuries of industrial exploitation.

This exploitation has reached such extremes that presently it appears that some hundreds of thousands of species will be extinguished before the end of the century

But today's report is the starkest warning yet of the potentially devastating impact of climate change and human exploitation on the Antarctic's delicate ecosystems.