81.promote vt. 促进；提升
例句：Fertilizer promotes leaf growth. 肥料促进叶子的生长。
82.notion ['nəʊʃn] n. 概念；意图，想法
例句：The traditional notion of marriage goes back thousands of years. 传统的婚姻观念可追溯到几千年以前。
83.novel ['nɒv(ə)l] adj. 新颖的
例句：What a novel idea! 多么新奇的想法呀！
84.nuisance ['nuːsns] n. 损害，妨害，讨厌（的人或事物）
例句：The dogs next door are a real nuisance. 隔壁的那几只狗实在是讨厌。
85.oblige [ə'blaɪdʒ] v. 迫使，责成；使感激
例句：Circumstances had obliged him to sell the business. 客观情况迫使他*公司。
86.obscure [əb'skjʊr] adj. 阴暗，模糊不出名的; 不重要的 vt. 使…模糊不清; 掩盖
例句：The view was obscured by mist. 薄雾中景色朦胧。
87.obstacle ['ɒbstəkəl] n. 障碍（物），妨碍
例句：There are formidable obstacles on the road to peace. 通往和平的道路上存在难以逾越的障碍。
88.occupation [ɒkjʊ'peɪʃ(ə)n] n.职业
例句：Please state your name, address and occupation. 请写明你的姓名、地址和职业。
89.offend [ə'fend] v. 冒犯，触犯
例句：His remarks deeply offended many Scottish people. 他的话严重冒犯了许多苏格兰人。
90.opponent n. 敌手，对手
例句：Graf’s opponent in today’s final will be Sukova. 格拉芙今天的决赛对手将是苏科娃。
