由正则表达式注释器执行的额外文本分析会影响性能，会降低解析器的最大吞吐量。
The additional text analysis performed by the regular expression annotator does have a performance impact and will reduce the maximum parser throughput.
解析器不关心空白或注释，因而扫描程序会忽略了这些。
The parser doesn't care about whitespace or comments, so the scanner disregards them.
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