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It is hard to put that complex plan into effect.
要执行那个复杂的计划很难。
youdao
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It's a very important and complex issue about optimization of train formation plan.
列车编组计划方案的优化问题，是一个很重要而又复杂的决策问题。
youdao
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It's a very important and complex issue about optimization of train formation plan.
列车编组计划方案的优化问题，是一个很重要而又复杂的决策问题。
youdao