做人最重要的是开心,不开心就没意思。
有人居住的世界的界限是由人类知识的范围决定的。
Natural gas will play a crucial bridging role, but it cannot be the final destination.
History has neither the venerable age of the earth nor the innocence of the child; it is always the result of human passions and human errors.
Mathematics is a conversation between the past and the future.