SVG is an XML vocabulary for describing vector images.

SVG是一种xml词汇表，用于描述矢量图像。

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The bigger mistake, in this case, is using raster rather than vector images.

这种情形中最大的错误在于使用了光栅图而非矢量图。

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QVectors is another neatly organized web resource for quality vector images.

QVectors是另一个排列整齐的网站，矢量图片的质量都很高。

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Most importantly, Google is now using vector graphics for its maps, which are scalable and much lighter weight than the traditional stitched together images used in most Google Maps incarnations.

ENGADGET: Google Maps 5.0 hits Android, includes new 3D map view and offline Navigation