1.nonbiodegradable a．不能生物降解的

詞根記憶：non(不)+bio(生物)+degradable(可降解)--不能生物降解的

例：Plastic containers account for the primary part of nonbiodegradable waste.

2.noncommercial a．非商業的(not occupied with or engaged in commerce or work intended for commerce)

詞根記憶：non(不)+commercial(商業的)--非商業的

例：The average noncommercial-vehicle driver is involved in less long- distance driving than is the average commercial-vehicle driver.

3.noncommittal a.不負責的(not revealing what one feels or thinks)；不明朗的(giving no clear indication of attitude or feeling)

詞根記憶：non(不)+commit(負責)+tal--不負責的

例：The noncommittal candidate refused to debate the issues.

4.nonessential a．不重要的(unimportant)；非必需的(not essential)

詞根記憶：non(不)+essential(重要的，必要的)--不重要的；非必需的

例：Only expenditures for nonessential services were actually reduced.

5.nonstarter n.毫無成功希望的人（someone that is not productive or effective）

例：Those nonstarters were considered the ones who wanted stability.

6.note n．記錄(record)；音符(melody)；v.注意(to notice)；指出(to indicate)

例：My boss noted my reluctance to work On Saturdays.//This musical scale has 13 notes.//This report noted that the closer One Came to town, the more the city air would become increasingly acidic.

派生詞：noted（a．著名的）

7.notify v.通知，報告(to inform)

詞根記憶：not（標識）+耐（使…）--使…知道--通知，報告

例：Each country was to notify the six other countries when it had completed its action．

派生詞：notification（n.通知，告示）

8.notorious a.聲名狼藉的(widely and unfavorably known)

詞根記憶：not(知道)+orious(多的)--人所共知的--聲名狼藉的

例：Napoleon was notorious for refusing to share power with any of his political associates.

9.novel n.（長篇）小說( an invented prose narrative that is usually long and complex and deals especially with human experience through a usually connected sequence of events);a．新穎的(new)；期譯寄的( original new)

詞根記憶：nov(新)+el--新穎的

例：novel behavior 怪異的行為//The early buyers of a novel product are always people who are quick to acquire novelties.

派生詞：novelty(n．新奇性)

同根詞：innovate(v.革新)