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Standard economics can be divided into two major fields.
标准经济学可分为两个主要领域。
youdao
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Currently involved in two major fields of energy and environmental protection.
目前主要涉及能源和环保两大领域。
youdao
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Currently involved in two major fields of energy and environmental protection.
目前主要涉及能源和环保两大领域。
youdao