Never stop learning. The minute you think you know it all is the minute you stop growing.
国家是人类社会中最重要的机构,其强弱是社会成败的关键决定因素。
煤炭仍将是能源结构的一部分,但其角色必须为更清洁的未来重新定义。
The study of mathematics is a constant dialogue between the concrete and the abstract.