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关注:1
2013-05-23 12:21
求翻译:Plastics is made from water which is a natural resource inexhaustible and available everywhere,coal which can be mined through automatic and mechanical processes at less cost and lime which can be obtained from the calcinations of limestone widely present in nature.是什么意思?![]() ![]() Plastics is made from water which is a natural resource inexhaustible and available everywhere,coal which can be mined through automatic and mechanical processes at less cost and lime which can be obtained from the calcinations of limestone widely present in nature.
问题补充: |
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