robot  
noun [ C ] uk/ˈrəʊ.bɒt/ us/ˈroʊ.bɑːt/
  (MACHINE)      
 B1 机器人
a machine controlled by a computer that is used to perform jobs automatically
  The surgery can be carried out by robots. 手术可以由机器人来做。 
 a bomb disposal robot 拆弹机器人 
   (PERSON)      
  disapproving像机器一样的人,机械呆板的人 
someone who does things in a very effective way but never shows their emotions
  He played like a robot - note-perfect, but with no expression or dynamics at all. 他演奏得很机械,虽然每个音都准,但是没有一点感情的表达和变化。 
   (TRAFFIC LIGHT)     
 South African English自动交通信号灯 
a traffic light