When using progressive video download, the media infrastructure determines how much vid-eo it needs to cache before it can start playing back the video.

当使用视频连续下载的时候，媒体环境决定在视频播放之前多少视频数据需要被缓冲。

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It started out playing progressive rock and producing concept albums.

VOA: special.2010.03.19

The verdict is likely to prove an embarrassment for Qatar which has worked hard to cultivate a progressive, modern image, and is currently playing host to a major international climate change conference.

BBC: Qatari poet appeals over life prison sentence

Indians fans have stayed away from Progressive Field in droves in recent years even during stretches when the team was playing well.

FORBES: Indians Showing They're Players