adj. 终年的，长久的，多年生的，不断生长的，四季不断的；n. 多年生植物，长期存在的；
[例句] ...the perennial urban problems of drugs and homelessness...
[例句] There's a perennial shortage of teachers with science qualifications.
vt. 清除，（使）净化，（使）通便，肃清；n. 净化，泻药，整肃；
[例句] The leadership voted to purge the party of 'hostile and anti-party elements'...
[例句] He recently purged the armed forces, sending hundreds of officers into retirement...
vt. 超越，越过，违反，违
[例句] If a politician transgresses, that is not the fault of the media.
[例句] ...a monk who had transgressed against the law of celibacy...
n. 壁龛，合适的位置（工作等），有利可图的缺口，商机；
[例句] I think we have found a niche in the toy market...
[例句] Small companies can do extremely well if they can fill a specific market niche.
adv. 亲自地，就个人而言，个别地，私人地（与工作相对）；
[例句] Personally I think it's a waste of time...
[例句] You can disagree about them, and I personally do, but they are great ideas that have made people think...
v. 摸索( feel的第三人称单数 )，触，深感，以为；
[例句] I am feeling very depressed...
[例句] I will always feel grateful to that little guy...
n. 风( wind的名词复数 )，呼吸，（随食物或饮料）吞下的气，（管弦乐团的）管乐器；v. 缠绕( wind的第三人称单数 )，卷绕，转动（把手），给…上发条；
[例句] There was a strong wind blowing...
[例句] Then the wind dropped and the surface of the sea was still...
adj. 有界限的，有限制的；v. 跳( bound的过去式和过去分词 )，弹回，向上弹，向上跳；
[例句] There are bound to be price increases next year...
[例句] If you are topless in a public place, this sort of thing is bound to happen.
adj. 满的( full的最高级 )，装满的，完全的，充分的；
[例句] Once the container is full, it stays shut until you turn it clockwise.
[例句] ...a full tank of petrol.
adj. 缺席的，不在场的，缺少的，缺乏的，不在意的，茫然的；
[例句] He has been absent from his desk for two weeks...
[例句] The pictures, too, were absent from the walls...
n. 吸收，专注，合并；
[例句] This controls the absorption of liquids...
[例句] Vitamin C increases the absorption of iron from food.
adj. 可接受的，合意的，（社会上）认同的，（礼物等）令人满意的；
[例句] It is becoming more acceptable for women to drink alcohol...
[例句] The air pollution exceeds most acceptable levels by 10 times or more.
adj. 生气的，愤怒的，发怒的，（颜色等）刺目的，（伤口等）发炎的；
[例句] She had been very angry at the person who stole her new bike...
[例句] Are you angry with me for some reason?...
adj. 辅助的，备用的，补充的，附加的，副的；n. 助动词，辅助者，辅助人员，附属机构，附属团体，辅助设备；
[例句] Nursing auxiliaries provide basic care, but are not qualified nurses.
[例句] The government's first concern was to augment the army and auxiliary forces.
n. 浮力，（物体在液体里的）浮性，（从失望、噩耗等中）恢复正常的能力，（价格、营业状况等的）维持力；
[例句] Air can be pumped into the diving suit to increase buoyancy.
[例句] I'll have to take stock, go carefully and regain my buoyancy.
n. 地毯，桌毯，毛毯，绒毯，地毯状覆盖物，（装在飞机上的）雷达电子干扰仪；vt. 在…上铺地毯，把地毯铺在…上，斥责；
[例句] They put down wooden boards, and laid new carpets on top.
[例句] ...the stain on our living-room carpet.
adj. 欢乐的，高兴的，令人愉快的；
[例句] They are both very cheerful in spite of their colds...
[例句] Jack sounded quite cheerful about the idea.
n. （牛）颈部到肩部的肉，咕咕（呼鸡声），砸砸（呼马声），抛出，亲爱的；vt. [机械工程]用卡盘夹紧，（口语）抛出，扔出，咕咕（咯咯、嘟嘟）地叫，（美国）辞
[例句] I took a great dislike to the clock, so I chucked it in the dustbin...
[例句] That second night, Sid Vicious chucked a bottle at the stage.
n. 建立，组成，体格，构成方式，宪法；
[例句] The king was forced to adopt a new constitution which reduced his powers.
[例句] ...the American Constitution...
adj. 受约束的，克制的；v. 控制( control的过去式和过去分词 )，管理，限制，克制；
[例句] The restructuring involves Mr Ronson giving up control of the company...
[例句] The first aim of his government would be to establish control over the republic's territory.