To guarantee smooth delivery of video and audio streams, while still maintaining the ability to transmit bigger chunks of information, the protocol may split video and data into fragments.

为了保证视频和音频流的平滑传送，在传送大数据量时也维持这种能力，协议可能把视频和数据分成碎片进行传输。

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If you want to get a little more technical, take a look at whether the website you are using to transmit information is using HTTPS -- hypertext transfer protocol secure.

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