clicker
noun [ C ] uk/ˈklɪk.ər/ us/ˈklɪk.ɚ/
手动小装置（按下用以计数、录音或遥控某物的小装置，按动时一般会发出轻微的声音）
a small device that you can press, for example to count, record, or control something, or to make a small sound
Security guards use hand clickers to count people as they leave the museum. 当人们离开博物馆时，保安用手动计数器来记录人数。
Find the clicker and change the channel. 找到遥控器，然后换台。
To train the animal, you must click a clicker a few times at the exact moment the pet is performing the correct action. 为了训练动物，宠物执行正确动作的时刻你必须及时点按几下遥控装置。
- More examples
- Men are twice as likely as women to hog the TV clicker and channel surf.
- My favourite gadget is the wireless clicker I use for slide show presentations.
- The kit includes a clicker to keep track of how much you walk a day.
- On a good day, his little clicker registers 4,000 to 5,000 visitors.
- The CR79 comes with a clicker for source switching and volume control.