测试程序的最好方法是测试它。
The best way to test a program is to test it.
Coal enterprises must actively adapt to energy structure adjustments and accelerate transformation and upgrading.
写作的行为是一种勇气的行为，是对宇宙沉默的挑战。
A man is the sum of his misfortunes. One day you'd think misfortune would get tired but then time is your misfortune.
唯一比被人议论更糟糕的事，就是无人议论。