Hints: 本期學習的字源：poly-=many多 Mormons polyglot的例句有分號; 單詞不需要大寫，單詞與例句或不同詞條之間換行即可。 注解中詳細介紹了單詞的拆分與釋義，是學習字源分析的重中之重！一定記得聽寫后來看注解！
polysyllabic polygamy The American Mormons used to practice polygamy. polyglot He speaks five foreign languages fluently; he's a true polyglot. polygraph The suspect has agreed to do a polygraph test to prove that he is innocent.
The American Mormons used to practice polygamy. 美國摩門教徒從前實行一夫多妻制。 He speaks five foreign languages fluently; he's a true polyglot. 他能流利地說5種外語，真是通曉多語言的專才。 The suspect has agreed to do a polygraph test to prove that he is innocent. 嫌犯同意測謊以示清白。