Technology is not just a tool. It can give learners a voice that they may not have had before.

适应或淘汰，这是传统能源领域的信条。

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

【译文】孔子说：“经常学习，不也喜悦吗？远方来了朋友，不也快乐吗？得不到理解而不怨恨，不也是君子吗？”