n. 算术，计算，算法；
[例句] ...teaching the basics of reading, writing and arithmetic.
[例句] ...an arithmetic test.
adj. 刻苦的，勤勉的，殷勤的，百折不挠的；
[例句] ...an assiduous student...
[例句] Podulski had been assiduous in learning his adopted language.
adj. 运动员的，运动的，体格健壮的，行动敏捷的；
[例句] They have been given college scholarships purely on athletic ability...
[例句] Most athletic activities are about individual effort.
n. 土匪，强盗；
[例句] This is real bandit country.
n. 胡须，[虫]口鬃，[动]颌毛，（牡蛎等的）鳃，[植]芒；vt. 使有胡须（颌毛，芒刺），抓（捋）住…的胡子，拔…的胡子，公然反对，勇敢地对抗；
[例句] He's decided to grow a beard.
[例句] ...Charlie's bushy black beard.
n. 十亿，数以十亿计，大量，一万亿；adj. （法美）十亿的，（英德）万亿的，无数的；
[例句] ...3 billion dollars...
[例句] This year, almost a billion birds will be processed in the region.
vt.& vi. 漂白，使褪色；n. 漂白剂，漂白；
[例句] These products don't bleach the hair.
[例句] Commercial flour is bleached artificially.
n. 沼泽，泥塘，沼泽地区，户外厕所；vt. （使）陷入泥
adj. 无聊的，无趣的，令人厌烦的，单调的，乏味的；n. 钻孔，钻屑；v. 令人厌烦(bore的现在分词)；
[例句] Not only are mothers not paid but also most of their boring or difficult work is unnoticed.
[例句] ...boring television programmes.
n. 号角，喇叭，筋骨草属植物，（装饰女服的）柱状玻璃小珠；vi. 吹号，吹喇叭；vt. 吹号集合，发出吼声，吹号表示（冲锋，撤退等）；
n. （车、船等的）铺位，睡觉处，卧处，牲口食槽，空话，废话；vi. 睡在铺上，合铺，合住；vt. 为…提供铺位；
[例句] He left his bunk and went up on deck again.
[例句] ...Henry Ford's opinion that 'history is bunk'.
n. 倾斜，（下层社会的）黑话，斜面，言不由衷的话；vi. 斜穿，使用黑话（或行话等），说言不由衷的话；vt. 使具有斜面，使倾斜，将…斜掷出去，猛扔；adj. 黑话的，有斜面的，斜穿的；
[例句] ...politicians holding forth with their usual hypocritical cant.
n. 食肉动物，食虫植物；
[例句] This is a vegetarian dish that carnivores love.
v. 庆祝，祝贺，举行宗教庆典，歌颂；
[例句] I was in a mood to celebrate...
[例句] Tom celebrated his 24th birthday two days ago.
n. 喧哗声，喧闹，大声的要求或抗议；vi. 喧哗，吵闹，大声地要求或抗议；
adj. 互补的，补充的，补足的；
[例句] To improve the quality of life through work, two complementary strategies are necessary...
[例句] Many plain tiles and complementary borders are also available...
vt. 把…合成一体，合并，巩固，加强，统一，合计金额；vi. 统一，合并，联合；
[例句] The question is: will the junta consolidate its power by force?...
[例句] Brydon's team-mate Martin Williamson consolidated his lead in the National League when he won the latest round.
adj. 接触的，邻近的，共同的；
[例句] Its vineyards are virtually contiguous with those of Ausone.
[例句] ...two years of travel throughout the 48 contiguous states.
adj. 腐蚀性的，侵蚀性的，（对社会、个人情感等）有害的，（语言）激烈的；n. 腐蚀性物品；
[例句] Sodium and sulphur are highly corrosive.
[例句] ...the corrosive effects of inflation.
adj. 隐蔽的，不公开的，秘密的，偷偷摸摸的，在丈夫保护下的；n. 遮蔽处，树丛；
[例句] They have been supplying covert military aid to the rebels...
[例句] The depth of covert racism in my own profession frightens me.