That head movement is what happens when you nod off while sitting.

当你坐着犯困的时候，这种头部动作就会发生。

This robot does mimic head movements to connect with the user. She even tells jokes.

这个机器人模拟头部运动来与用户沟通。她甚至会讲笑话。

We make sure that you can control the entire game with just your head movements.

我们确保你只需要动动头，就可以控制整个游戏。

Sign languages are produced with hand movements, head movements and facial expressions rather than sounds.

手语是通过手部动作、头部动作和面部表情而不是声音产生的。

Today, he uses an on-screen keyboard where he types in individual letters using his head movements.

如今，他使用屏幕键盘， 通过头部运动输入单个字母。

Larger head movements are also typical of an experienced public speaker who is aware of changes in the way body language is perceived at longer distances.

较大的头部运动也是经验丰富的公共演讲者的典型表现，他们知道在较远的距离下肢体语言的感知方式会发生变化。