现今，有许多努力致力于收紧排放控制规范，并将先前未受控制的也纳入规范行列之中。

There exists today a host of efforts to tighten emission regulations and to include elements previously not regulated.

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文献纳入规范研究吸入抗胆碱能药物疗治COPD的随机对照试验，药物疗治时间不少于30天，而且报道有心思和精力管不良事件。

Study Selection Randomized controlled trials of any inhaled anticholinergic for treatment of COPD that had at least 30 days of treatment and reported on cardiovascular events.

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XML的普及已经迫使标准团体工作组扩展SQL规范，以便纳入XML处理功能。

XML's popularity has spurred standards body working groups to expand the SQL specification to include XML processing functions.

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