更好的控制手工索引和索引编写（RAM使用、非混合的文件格式标志等等）。

Better control over manual indexing and index writing (RAM consumption, non-compound file format flag etc).

youdao

因此位图的地位依然很重要，但是对于那些可以分解成基本形状的图像，比如图表、标志、和化学公式等等，矢量文件格式天生就具有较高的效率。

So bitmaps play a useful role, but for those images that can be decomposed into basic shapes such as diagrams, logos, and chemical formulas, a vector file format is inherently more efficient.

youdao

在用标记处理 XML 文档的过程中，我们 必须将所有的标志（markup）和 XML 语法（比如实体、标签、属性等等）转换为标记格式。

The process of tokenising an XML document MUST convert all markup and XML syntax (i.e., entities, tags, attributes, etc.) into their corresponding tokenised format.

youdao