The final ingredient to effective video communication is eye contact.

有效视频交流的最后一个要素是眼神交流。

This Is How Short Your Life Is was a simple but effective video.

“人生何其短暂，从现在开始全力以赴”是个简单但给人深刻印象的视频。

The research could inform the design of effective video game workouts and social media tools to help people exercise.

这项研究可用来帮助人们设计出更高效的视频锻炼游戏和社会媒体工具。