By default, it matches only sequences of "keyword" characters (alphanumerics and underscore), and it has no deep sense of context beyond matching what's immediately to the left of the cursor.

默认情况下，它仅匹配“关键字”字符序列(数字、字母和下划线)，除了与光标左边进行匹配之外，它对上下文没有深刻的理解。

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For example, the shoe bucket has the ability to classify all of the shoes by color and size as well as matching all of the left shoes with their corresponding right shoes.

例如，这个装鞋的木桶可以将这些鞋子按照颜色和大小分类，还能将这些左脚的鞋子与它们相应的右脚的鞋子匹配。

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Put another way, matching starts at the far left of the index key and proceeds rightward.

换句话说，匹配从索引键的最左端开始并向右匹配。

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Rizzo's home run off Robert Carson was his fourth against left-handed pitching, matching his total from last season.

WSJ: Feldman pitches Cubs to 8-2 victory over Mets