153 ambulance 救护车
（1）.ambulate 移动
记忆方法：ampul(移动)+ate(表动词)→移动
实例：The patient was allowed to ambulate in his room.
（2）.amputate 截肢
记忆方法：ampu(移动)+tate→把(肢体)移开 +联想ambulance→截肢
实例：To save his life, doctors amputated his legs.
（3）.preamble 序言,开场白
记忆方法：pre(在前)+amble(移动)→走在前面的→序言
实例： 'I would like you to return to the villa as soon as possible,' she said without preamble.
（4）.ramble n./vi.漫步，漫谈，漫游
记忆方法：r(古罗马时代开始r字母经常表示与狗相关的)+ amble(移动)→狗最喜欢散步→漫步，漫游
实例：This is the best season for a ramble in the suburbs.
（5）.perambulate 巡行，漫无目的地游走
记忆方法：per(全部)+ ambul(走)+ ate(表示动词)→全部走过=巡行，漫无目的地游走 近义词: perambulation(n.)
实例：Selectmen are required by law to perambulate the bounds every five years
154 hydrogen 氢
（1）.hydrate 水化物,使水合
记忆方法：hydr(水)+ate(表动词和名词)→变成水
实例：A hydrate is a chemical compound that contains water.
（2）.carbohydrate 碳水化合物
记忆方法：carbo(碳)+hydrate(水化物)→碳水化合物
实例：The word carbohydrate refers to a compound of carbon, hydrogen, and oxygen that is a major source of energy for animals.
（3）.hydrant 水龙头
记忆方法：hydr(水)+ant(表名词)→水龙头
实例：The administrative trials agency already handles thousands of police summonses for offenses such as littering or obstructing a fire hydrant.
（4）.anhydrous 无水的
记忆方法：an(无)+hydro(水)→无水的
实例：The plant, which produces pepperoni, precooked hamburger, sausage crumbles and meatballs, uses anhydrous ammonia as a refrigerant.
（5）.dehydrate 脱水
记忆方法：de(去掉)+hydr(水)→脱水
实例：Normally specimens have to be dehydrated.
155 annum 年
（1）.annals 编年史
记忆方法：ann(年)+al(表名词)→编年史
实例：He has become a legend in the annals of military history.
（2）.anniversary 周年纪念
记忆方法：ann(年)+ever(永远,纪念)+ary→周年纪念
实例：She underwrote a video celebrating the museum’s 30th anniversary, a piece that Sterling let her preview.
（3）.perennial 多年的,长久的
记忆方法：per(全)+enn(年)+ial→全年的,多年的→长久的
实例：There's a perennial shortage of competent engineers.
（4）.annuity 年金,养老金
记忆方法：ann(年)+uity(连续)→年金
实例：An annuity is money that comes from an investment and is paid out regularly over a fixed period of time.
（5）.biennial 每两年一次的
记忆方法：bi(双)+enn(年)+ial→每两年一次的
实例：a biennial event happens once every two years
（6）.millennium n.一千年;千年期
记忆方法：mill(一千)+enn(一年)+ium(表名词)→一千年
实例：The whole world was counting down to the new millennium.
156 connect 连接
（1）.annex 附加,吞并
记忆方法：an(to)+nex(捆)→捆在一起→附加,吞并
实例：Hitler was determined to annex Austria to Germany.
（2）.nexus 连接, 事物联系
记忆方法：nex(连接)+us(表名词)→连接
实例：A nexus is a connection or series of connections within a particular situation or system.
157 null 空
（1）.annihilate 消灭
记忆方法：an(to)+ nihil(=null空)+ate→清空,歼灭
实例：The enemy was warned to capitulate or face annihilation.
（2）.nihilism 虚无主义
记忆方法：nihil(空)+ism(表名词,…的主义)→虚无主义
实例： The philosophy of those long - hairs leans towards nihilism.
难记词
（108） blunder 因为粗心,无知而犯错误
记忆方法：联想记忆:来源于blind→犯错误
实例：I think he made a tactical blunder by announcing it so far ahead of time.
（109） bolster 支持
记忆方法：发音记忆: 发音类似于boast吹牛→吹牛是为了支持
实例：When you cheer up a friend who's feeling down, you bolster them.
（110） boor 农民,粗鲁的人
记忆方法：联想记忆: poor→boor 衍生: boorish
实例：A boor is a crude, rude person. Boors lack sophistication and manners.
（111） brag 吹嘘
记忆方法： 衍生: braggart自夸者
实例：When you're bragging, you're boasting.
（112） brandish 挥舞
记忆方法：联想记忆: brand(商标)→挥舞(商标)
实例：The clown was brandishing an ax, according to a Facebook post accompanied by a blurry photograph.
（113） brisk 轻快的,生意红火的
记忆方法：联想记忆: b(无)+risk(风险)→无风险所以人人都干→轻快,红火
实例： "1. Taking a brisk walk can often induce a feeling of well-being. 2. Its sales had been brisk since July."
（114） bristle 动物的鬃毛,人的胡须茬→毛发竖立
实例：It makes the hairs at the nape of the neck bristle.
（115） bungle 搞砸
记忆方法：联想记忆: be+ungle=ugly
实例：That last stupid bungle of his is the end.
（116） buoyant 轻快地,漂浮的→心情愉快的,经济繁荣的,股票上涨的
联想记忆：buoy=boy +ant→像男孩子样的,轻快的,漂浮的→繁荣的
实例：It takes a very buoyant personality to cope with constant rejection.
（117） burnish 磨,刨光
记忆方法：burn(燃烧)+ish→金属的打磨需要先燃烧
实例：His appointment was approved unanimously by the Senate, burnishing his reputation as a man above partisanship.
（118） bustle 喧闹,忙乱
记忆方法：联想记忆:来源于bus→大街上巴士你来我往的场景
实例：hustle and bustle 熙熙攘攘
