But the recurring problem led industry experts to wonder whether the problem went beyond sloppy production and resulted from a faulty battery or software design.

这个问题反复出现，导致行业专家怀疑该问题是否并非只是生产环节的马虎，而是电池或软件设计存在缺陷。

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The 17-goal striker has suffered with a recurring knee problem though which has caused him to miss games.

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In the meantime, be careful not to make a temporary problem a recurring one.

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