一个奇怪的事实是,根据从生物学或地球物理学的角度出发,对地球史前条件会得出完全相反的结论,这反映了我们目前知识的不完整状态。
The wild is a place of beauty. To survive, you have to appreciate it.
I don't believe in failure. It's not failure if you enjoyed the process.
美国是一个巨大的锅炉。只要下面点着火,它会产生无限的能量。