【译文】知道的就是知道的，不知道的就是不知道的，这就关于知道的真谛。”

爱国英雄给民族带来光荣，专制暴君给民族带来灾难。

The application scenarios of drones far exceed our imagination.

I don't chase records, records chase me.

I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross and concentrating.

The world is a very complicated place, and it's not always easy to understand what's happening around us.

世界上充满了神奇的事物，耐心地等待着我们的感官变得更加敏锐。