Memory, I realize, can be an unreliable thing; often it is heavily coloured by the circumstances in which one remembers.
快乐就是能够不带恐惧地意识到自己。
能源的未来在于多样化——石油、天然气、可再生能源及其他。
科学不仅仅是寻找答案,更是提出正确的问题。