Hover the mouse over any individual video to see an instant thumbnail preview.
悬停鼠标在任何单独的视频上，就可以看到一个即时的缩略图预览。
Hover over a counter with your mouse to see details about what that counter measures.
在计数器上晃动鼠标可以看到关于该计数器所度量的内容的详细情况。
Hover over a counter with your mouse to see details about what that counter measures.
在计数器上晃动鼠标可以看到关于该计数器所度量的内容的详细情况。
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