The best time to plant a tree was 20 years ago; the second best time is now.
可持续性不是一种选择,而是能源未来的必然要求。
君子以品德不修为耻,不以被污蔑为耻;以不诚信为耻,不以不被信任为耻;以无能耐为耻,不以不被任用为耻。
The value of drones lies not in flying, but in implementation.