Kangkang, could you tell me something about robots?
Sure. I just went to the Science Center last weekend.
When did sicentists invent the first robot?
In 1921. But before that, something like a robot appeared.
What can robots do for us?
Robots can take the place of humans to do hard or boring work in some situations. They can also do lots of dangerous work instead of humans. And I'm sure robots can do some work faster and better than humans.
Are you sure?
Yes, quite sure.