1、The team behind the article and video in question make no mention of the system， or whether or not in detected them.这篇文章和视频的幕后因队并没有提到此系统以及它是否检测到了他们。
2、Video is a good medium for learning a foreign language.录像是一种学习外语的好方法。
3、Modern video cameras are light and easy to carry.新型的摄像机很轻，容易携带。
