【利用指数】 高级语法使用(Higher Level Grammar) 七分必备语法之情态动词完成时： 【听力真题】 The early farmers kept various animals, including cattle and sheep.
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很多应用程序都不需要Lucene Query parser语法的全部，尤其是使用通配符和其他高级查询类型的情况下就更是如此。
Many applications do not need the full power of the Lucene query Parser Syntax, especially the use of wildcards and other more advanced query types.
但是，使用高级词汇或语法常常导致各种错误。
However, using "difficult" words or grammar often leads to lots of mistakes.
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