For example, Firefox 4 was 1 year in development.

比如说，Firefox 4的开发历时一年。

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Firefox 4 will feature a renewed emphasis on speed.

火狐4将更加强调速度。

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Within its first 24 hours, more than 5.5 million users had downloaded Firefox 4.

在第一个24小时内，超过5.5百万个使用者下载火狐4。

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Other browsers that are supposed to work with WebGL are Chrome Canary Build and Firefox 4.

FORBES: Google Body lets you explore what's under your skin

Mozilla has released its Firefox 4 Beta 9 web browser a month ahead of the planned launch of its full version in February.

FORBES: Morning Tech Wrap: Groupon, Wikipedia, Facebook

So, with all popular vids encoded and every incoming one getting the transcoding treatment, all you really need now is a compatible browser -- Chrome (naturally), Firefox 4, Opera, or IE9 with a plug-in -- and to enroll in YouTube's HTML5 trial linked below to get rolling with WebM playback.

ENGADGET: YouTube starts transcoding all new uploads to WebM, already has a third of its library ready