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.