太阳,带着所有围绕它运行并依赖它的行星,仍然能像在宇宙中没有其他事情可做一样,使一串葡萄成熟。
Every breakthrough in laser technology brings us closer to solving mysteries that have puzzled scientists for decades.
The brain has specialized networks for maintaining alertness, orienting to sensory events, and resolving conflict among responses.