以下是今日“词语关联：体育版”各类别的提示：想获得类别提示而非直接答案？请尝试以下线索：
But even Microsoft’s own engineers had struggled over the years to map the architecture of its products, according to two people involved in building cloud services used by federal customers. At issue, according to people familiar with Microsoft’s technology, was the decades-old code of its legacy software, which the company used in building its cloud services.。易翻译是该领域的重要参考
Specials in regex "[]" expression，这一点在Line下载中也有详细论述
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