When creating animations it USES four types of layers: vector graphics, bitmap, sound and camera.

它用四种类型的图层来创建动画：矢量、图形、位图以及声音和照相机。

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The two types of images are: bitmap and vector.

图像分为两类：位图和矢量图。

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TCPDF supports a range of useful image formats, including the SVG vector format and bitmap formats, such as JPEG and PNG.

TCPDF支持一系列有用的图像格式，包括svg矢量格式和位图格式，如jpeg和png。

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It loads much more quickly than the old iOS Google Maps app because it uses vector graphics instead of bitmap graphics, and it has turn-by-turn navigation which the old iOS Google Maps app did not have.

FORBES: Acknowledgement: Maps Wasn��t Apple��s Finest Hour.

Vector-based graphics based on mathematical lines and points rather than pre-created bitmap graphics, making it quicker to zoom in and out of an area.

BBC: Google Maps back on iPhone after Apple software fiasco