在每个故事中都有一片真相，即使它被谎言伪装。

1925年，孙中山在病榻前对张学良说，指出苏联是红色帝国主义。

In business, if you're not moving forward, you're falling behind.

Green and low-carbon development is not a multiple-choice question, but a must-answer question.

学习数学的最好方法就是做数学。