译文:即使处在平安的环境,也要时刻想到可能会有突如其来的危险。
The future of coal is not about the past; it's about innovation and sustainability.
【译文】君子可以去救人,却不可陷进去;可以受欺骗,却不可以盲目行动。
In mathematics, you don't understand things. You just get used to them.