I frequently get calls from family members asking why the font size on their Web browser suddenly changed or where they should look for the photos they have just downloaded from their digital camera.
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这种想法并不正确，长度与宽度元素只是帮助浏览器计算图片所占用的空间，以提高网页下载速度。
Wrong. The width and height elements are to allow the browser to calculate how much space to allocate for an image. This helps the page load faster.
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