滤词器在分词之后对标号做进一步处理（最典型的比如去掉标点符号和一些常见词，像"the", "an", "a"）。

The filters do any post-tokenizing work on the tokens (typically dropping out punctuation and commonly occurring words like "the", "an", "a", etc).

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格式标号通常用于标记工作表中的信息，通常是一个字或符号。

Format Label is often used to identify information in a worksheet, it is usually a word or symbol.

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如果信息点比较多，那就首行缩进、加标号或项目符号。

If you're making multiple points, use indentations and Numbers or bullets.

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