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来源:雅诚德英语网
The problem of the so-called replaceable resources of the biosphere has become particularly acute.
生物圈中所谓可替代资源的问题变得极为尖锐。
The problem of the so-called replaceable resources of the biosphere has become particularly acute.
生物圈中所谓可替代资源的问题变得极为尖锐。