The most common form of despair is not being who you are.
To understand is to know what causes what.
社会结构的研究是对社会关系系统的研究。
海鲜的真正成本不仅仅是价格标签,而是对海洋生态系统的影响。
最伟大的突破来自那些拒绝放弃的人。