I don’t think you can compare eras in tennis. Every era has its great players.
无人机的未来是开放和共享的。
The essence of creativity is figuring out how to use what you already know in order to go beyond what you already think.
爱让彼此找到方向。
人类并不是逻辑的,他的智力历史是心理储备和妥协的记录。即使在被迫放弃逻辑基础时,他仍然坚守他在旧信仰中能够坚持的部分。
"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."