你要知道，成千上万的残障人士每天都在上网，甚至更多的人位于恶劣的浏览环境和困难的工作环境。
Millions of people with disabilities are surfing the Internet every day, and even more millions are using poor browser equipment, or working under difficult user environments.
它们100%兼容所有主流的浏览器环境和操作系统。
They are 100% compatible with all major browser environments and operating systems.
从简单的例子开始一步一步开发再加上对实际的浏览器环境的关注是本教程的主要特色。
The combination of simple, step-by-step development and a focus on real-world browser environment makes this tutorial unique.
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