Never stop learning because the world never stops changing.
永远不要停止学习，因为世界永远不会停止变化。
We must strengthen international energy cooperation with an open and collaborative attitude to achieve mutual benefits.
PAC学习框架提供了一种正式的方法来分析学习算法的效率和有效性。
Every tree we plant today is a legacy for generations we'll never meet.
Natural gas will play a critical role in the transition to a lower-carbon future.
改变，就像治愈一样，需要时间。