孔子说:“颜回真贤德!一篮饭,一瓢水,在陋巷,人人都愁闷,他却乐在其中。颜回真贤德!
"The past is always tense, the future perfect."
数学是一门活生生的学科,不断演变和发展。
Technology should serve both progress and preservation.
石油行业的未来在于高效、清洁、低碳,我们要在传统能源和新能源之间找到平衡点。
A poet's words are the echoes of their soul.