The biggest browser limitation I've had to overcome is the lack of native cross-browser WebSockets support.

我要克服的最困难的浏览器限制就是缺乏本地的跨浏览器WebSockets支持。

youdao

There are also lots of libraries for doing new experimental stuff like websockets and the community is very active.

还有很多库在尝试一些新的事情，比如websockets，社区也非常活跃。

youdao

For example, while Chrome 5 and Safari 5 have native WebSockets support, the current versions of Firefox and Opera do not.

比如说，虽然Chrome 5和Safari 5都提供了本地的WebSockets支持，但当前版本的Firefox和Opera则不支持。

youdao

The introduction of WebSockets allows fast bi-directional full-duplex connections between a browser and an application, useful for high-performance browser-based applications.

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