Vector data contains geometric shapes defined by x and y coordinates, and frequently z (elevation) coordinates.

矢量数据包含由 x 和 y 坐标，经常还有 z（立面）坐标所定义的几何图形。

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What is surprising is that users age 73 and up use the Internet just as frequently for doing health searches as does Gen y.

让人觉得奇怪的是，年纪在73岁以上的网民频繁地使用互联网查询保健信息，这一点跟y一代一样。

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The start-ups in the tech incubator Y Combinator, whose acceptance rate is less than 3%, change products and markets so frequently that the idea they applied with is often irrelevant to the final product, says founder Paul Graham.

WSJ: 'Pivoting' Pays Off for Tech Entrepreneurs