Innovation requires both creativity and rigorous testing.
传记是最亲密的历史形式。
The core of drones is not how high they fly, but how well they are used.
把（春秋末期晋国豪富）韩魏两大家庭的财产附加给某个人，他仍然谦虚谨慎，那么他的品质就比一般人强太多了。