爱国不是选择,而是责任。
"The path to greatness is not always easy, but it is always worth it."
简单不是缺乏复杂性,而是对复杂性的解决。
地球并非刚体,其对力的响应必须用适用于可变形介质的方法来处理。
One has to pay dearly for immortality;one has to die several times while still alive.