如果你只经历过美好的事情,你就不可能勇敢。
You can’t be brave if you’ve only had wonderful things happen to you.
无人机的未来不是替代人,而是帮助人更好地完成工作。
The universe is a place that is constantly changing and evolving, and we are just a small part of it.
We are all descendants of successful ancestors; failure left no progeny.