American Superconductor, a former star of the US clean energy sector, has missed a second deadline for filing its annual report to the securities regulator as it struggles to assess the impact of problems with its largest customer.
美国清洁能源领域昔日的明星公司——美国超导公司(American Superconductor)再一次错过了向证券监管机构递交年度报告的最后期限，因为该公司难以评估与其最大客户之间的纠纷可能带来的影响。
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