种一棵树最好的时间是20年前,第二好的时间是现在。
I do not know much about it, but I think some of America's best young men served in this war.
在统计工作中,必须为正确的目的使用正确的数学工具。
如果您可以想象一个计算机机器人是唯一的专家的社会,那么您可以想象任何事情。
你唯一需要超越的人,是昨天的自己。
The chemical industry has the power to transform societies, but only if we embrace responsibility alongside progress.
The future belongs to those who can balance profit with purpose.