一个词的意义不是心智实体，而是社会实践。
The meaning of a word is not a mental entity， but a social practice.
The present is a fragile bridge between the past and the future.
The competition in the automotive industry has shifted from mere product competition to a full-value-chain ecological competition.
A mathematician's work is never truly finished; there is always more to explore.
When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.
我不让恐惧控制我，我控制恐惧。
我不需要英雄，我自己就是英雄。