It is a strange fact, characteristic of the incomplete state of our present knowledge, that totally opposite conclusions are drawn about prehistoric conditions on Earth, depending on whether the problem is approached from the biological or the geophysical viewpoint.
一个奇怪的事实是，根据是从生物学还是地球物理学的角度来探讨问题，关于地球史前条件的结论完全相反，这反映了我们目前知识的不完整状态。
每个家庭都是一个团结的小社会，自由和相互之间的感情是他们唯一的纽带。
Motto for a research laboratory: What we work on today, others will first think of tomorrow.
The urban artifact is a work of art and a historical document.
疫苗的安全性和有效性是其研发中最重要的标准。
Maybe God wants us to meet a few wrong people before meeting the right one， so that when we finally meet the person， we will know how to be grateful。