I'm going to ask everybody in this half of the class please either turn your head or shut your eyes.

请左边的同学转过头去,或是闭上双眼。

耶鲁公开课 - 心理学导论课程节选

I should tell you first of all that in this class, the taping is not going to affect you because the camera is going to be behind your head.

我想跟你们强调的是,录像将不会影响你们,因为摄像机在你身后

耶鲁公开课 - 基础物理课程节选