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    16．尽管中国政府一直致力于改善空气质量，但是短期内目标可能很难达到．
    Although the Chinese government has beendedicated/committed/devoted to improving air condition，the target may be hard to reach within a short time．

    分析 尽管中国政府一直致力于改善空气质量，但是短期内目标可能很难达到．

    解答 答案：dedicated/committed/devoted to improving/…
    解析：根据中文"致力于…"可知，本题考查be dedicated/committed/devoted to doing sth"致力于/专心于做某事"；另外本题还考查improve"改善；提高"这一单词．拓展：本题使用的是现在完成时，现在完成时基本结构：主语+have/has+done+其它成分．

    点评 本题考查句子翻译，做此类题目时一定要根据中文及英文题干确定需要翻译的成分，再找出与之对应的英文并考虑各成分是否有形式的改变．

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