I don't let setbacks stop me. They make me stronger.
儿童开始对自己实践那些他人曾经对他实践过的相同行为形式。
I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.
无人机的未来是开放和共享的。
The best way to predict the future is to design it.