The galactic center is a unique natural experiment in strong gravity.
银河系中心是强引力下的一个独特的自然实验。
I don't rap for dead presidents. I'd rather see the president dead.
The love of a teacher is like drops of dew, which can revive even a withered soul; the love of a teacher is like a warm spring breeze, which can melt even frozen emotions.
最大的风险是不冒任何风险。在一个快速变化的世界里，唯一注定要失败的策略就是不冒风险。
A company's culture is defined by the actions of its leaders.
孔子说：“天冷时，才知道松柏最后凋谢。”