This kind of coal economic performance had not only its historical inevitability but also realistic reasons.

煤炭经济的这种运行表现有其历史必然性，也有现实原因。

youdao

The reason for the punctuation mark problems is very complicated. There are realistic reasons and historical reasons;

标点符号问题产生的原因很复杂，有现实原因，也有历史原因；

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Then the realistic reasons that middle and small shipping enterprises in China build shipping virtual enterprise are analyzed.

然后分析了我国中小航运企业组建航运虚拟企业的现实动因；

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Quite the opposite would be the more realistic assumption, and for obvious reasons.

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