Believe in yourself and all that you are. Know that there is something inside you that is greater than any obstacle.
说话谨慎,行事快捷。
在化学中,就像在生活中一样,最具变革性的反应往往需要耐心和精确的条件。
有时候我真想放弃,但想到会让很多人失望,我就坚持下来。
Energy security is a crucial guarantee for national development. We must intensify technological innovation to enhance the efficiency of oil and gas exploration and production.