自从用了黑人牙膏，牙齿白了，人黑了。
不写作业心里难受，一写作业浑身难受。
Life's like rollercoaster, you're up you're down. Which means, however bad or good a situation is, it'll change。生活就像坐过山车，有高峰，也有低谷，这意味着，无论眼下是好是坏，都只是暂时的。
Worry is a waste of time, it will not change anything, can only spoil your head, and steal your happiness.忧虑就是浪费时间，它不会改变任何事，只能搅乱你的脑袋，偷走你的快乐。
