Mr. Butler, " she said one afternoon, when grammar and arithmetic and poetry had been put aside. "He had comparatively no advantages at first.

“有一位巴特勒先生，”一天下午她说，那时他们已把语法、数学和诗歌放到了一边“开始时他的条件并不好。

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Operator precedence grammar is a powerful tool for handling arithmetic expressions.

算符优先文法是处理算术表达式的有力工具。

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The trivium consisted of grammar, logic and rhetoric, the quadrivium of arithmetic, geometry, astronomy and music.

三门科目由文法、 逻辑和修辞学组成；四门科目由算术、 几何、 天文和音乐组成。

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