39. Segregation: The policy and practice of imposing the social separation of races, as in schools, housing, and industry, especially so as to practice discrimination against people of color in a predominantly white society. 种族隔离, 强制实行种族的社会分离政策及实践，如在学校、居住和工业中，尤指在白人居多的社会中实行有色人种歧视的政策
40. Apartheid: An official policy of racial segregation practiced in the Republic of South Africa, involving political, legal, and economic discrimination against nonwhites. 种族隔离制, 南非共和国实行的一种官方的种族隔离政策，包括在政治、法律和经济诸方面对非白色人种的歧视.
41. Integration: The bringing of people of different racial or ethnic groups into unrestricted and equal association, as in society or an organization; desegregation. 种族或宗教融合, 在社会或组织中，使不同的种族或宗教派别的人处于无限制的平等的关系中;取消种族隔离
42. The majority of French-speaking Canadians live in Quebec.
43. Sir Thomas More coined the word “Utopia”; it means nowhere land in Greek.
44. The Hemingway Code heroes are best remembered for their indestructible spirit.
45. Phoneme: any one of the set of smallest distinctive speech sounds in a language that distinguish one word from another 音位，音素, 语言中最小的语音单位，如英语里 mat中的 m和 bat中的 b
46. polysemy: 一词多义
47. patron saint：保护圣徒, 守护神
48. Parentese: 父母语
49. back formation: 逆构词 脱落一词的词缀以构成新词 typewriter → typewrite
50. allomorph: Any of the variant forms of a morpheme. For example, the phonetic s of cats, z of dogs, and z of horses and the en of oxen are allomorphs of the English plural morpheme. 语素变体, 语素的一种变体形式，如语音学的中之 s在 cats中，z在 dogs中，和 iz在 horses中，还有 en在 oxen中都是英语复数语素的语素变体.