Cách sử dụng
The word 'observer' refers to someone who watches or sees events or objects. It can be used in many situations, such as in science experiments, sports events, or even just watching people on the street. It is important to be a good observer in order to learn and understand the world around us. For example, a birdwatcher is an observer who watches and studies birds, while a spectator at a football game is an observer who watches and enjoys the game. So, if you want to describe someone who is watching or observing something, you can use the word 'observer'.