If you think of a dolphin swimming or a cat running or jumping around, or even us as humans, when you go jogging or play tennis, we do amazing things.
试想一下在海里遨游的海豚、又跑又跳的小猫 甚至还有我们人类 在进行慢跑或者打网球的时候 我们的每一个动作都那么神奇