[交流] 请翻译一个句子

Originally posted by wangyl86 at 2009-10-15 09:29:
A concentration of naturally occurring solid,liquid, or gaseous material in or on the Earth’s crust in such form and amount that economic extraction of a commodity from the concentration is currently or potentially feasible.

Originally posted by echommm at 2009-10-15 09:53:

以这种形式和数量在地壳中（或其上）自然形成的具有一定浓度的固体、液体或气体，要想基于该浓度经济地提取商品在目前或在将来是可行的。-------------FYI

Originally posted by slowstar at 2009-10-15 10:22:
A concentration( of naturally occurring solid,liquid, or gaseous material in or on the Earth’s crust )in such form and amount that economic extraction of a commodity from the concentration is curr ...

Originally posted by wangyl86 at 2009-10-15 10:30:



A concentration of naturally occurring solid,liquid, or gaseous material in or on the Earth’s crust in such form and amount that economic extraction of a commodity from the concentration is  ...

Originally posted by slowstar at 2009-10-15 10:38:
A concentration of naturally occurring solid,liquid, or gaseous material in or on the Earth’s crust in such form and amount that economic extraction of a commodity from the concentration is curren ...