安全不是产品,而是一个过程。
Every tree we plant today is a legacy for generations we'll never meet.
可持续性不是一种选择,而是我们对后代的责任。
对冲低油价的最佳方法是降低盈亏平衡成本。
The core of drones is not how high they fly, but how well they are used.