如果我们为之奋斗，煤炭的未来是光明的。
一个力学问题只有被简化为代数问题时才算解决。
The past is always tense, the future perfect.
Every line we draw carries responsibility.
A company's culture is defined by the worst behavior it tolerates.
生命太短暂，不能浪费在消极上。