Now, 20th-century psychologists and sociologists were thinking about strangers, but they weren't thinking so dynamically about human relations, and they were thinking about strangers in the context of influencing practices.
20世纪的心理学家和社会学家 专注于陌生人， 但是他们当年并没有料到人类关系的这种多样性， 而且他们是在实践影响的范畴内 讨论研究陌生人的。