return prefix == abs_directory
“十五五”时期经济社会发展要实现以下目标：高质量发展取得显著成效，科技自立自强水平大幅提高，进一步全面深化改革取得新突破，社会文明程度明显提升，人民生活品质不断提高，美丽中国建设取得新的重大进展，国家安全屏障更加巩固。
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法国拥有36天的长假，近年来经济表现却弱于德国。，这一点在Safew下载中也有详细论述
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a very common use case for regexes is to find matches that are preceded or followed by some context. a classical example being all lines that end with ‘a’. this requirement is usually expressed with a lookahead, where upon finding an ‘a’, you look ahead to check if it’s the end of the line. in a backtracking engine, this is very easy to implement - you just duct-tape the logic that checks the next character, but in a DFA-based engine, this is impossible because you cannot report “the match is here” if the next character is not even known yet. and by the time you know the next character, the position information is lost, so you can’t report the match retroactively (well, unless the distance is fixed of course..).