2. such as 用来列举同类人或物中的几个例子。如:
He knows four languages, such as Chinese and English. 他会说四种语言,如汉语和英语。 3. namely 表示全部列举。如:
He knows three languages, namely Chinese, English and French. 他会说三种语言,如汉语、英语和法语。
fast, quick与rapid的用法区别
三者均可表示“快”，其区别比较麻烦，归纳以下几点供参考：
1. 表示人的动作之迅速，三者都可用，有时可换用。如： a fast [rapid, quick] worker 做事手脚快的人 a fast [rapid, quick] typist 打字快的打字员 2. fast 表示“快”，侧重指速度方面。如： She ran as fast as she could. 她有好快就跑好快。
You are reading too fast for me to follow. 你读得太快，我跟不上。 注：询问速度或表示钟表走得快等，通常用 fast。如： How fast is the fish swimming? 这鱼游得有多快? My watch is 5 minutes fast. 我的表快 5 分钟。
3. quick 通常表示某一动作来得突然或时间持续很短，有时还含有匆忙之意(但通常不指动作的频率)。如：
He gave her a quick kiss. 他突然吻了她一下。 He had a quick look at it. 他匆匆地扫了一眼。
She ate a quick breakfast and rushed off to work. 她匆匆吃了早餐就赶去上班。 注：催人快做(快走等)，通常用 quick。如： Be quick! 快点!
4. rapid 比另外两词要稍正式些，通常指突然或急速(且连续不断)的动作。如： a rapid burst of machine-gun fire 机枪声骤起
He asked questions in rapid succession. 他连珠炮似地发问。
另外 rapid 还有一个特殊用法，即指一种有益的高速度(相比之下，fast 和 quick 有时指无益的急速)。如：
He made rapid progress in English. 他在英语方面取得了很快的进步。
Require
It requires that ... 有...的必要 require sth. of sb. 对某人有...的要求 require sb. to do sth. 要求某人做某事
aim at
v. 针对；瞄准；目的在于
同义词和常用词语汇总
error, fault, blunder, flaw, mistake, shortcoming, defect, slip 这些名词均有“错误”或
error： 指思想或行动背离正题轨道或没有得到正确指引而出现的偏差或错误。 fault： 一般指小并且可宽容的缺点、错误。
blunder： 通常指由于无知或情况不明造成判断或行动上的大错。
flaw： 指结构或组织上的缺点，如破裂之处。用作比喻意义时，指品格上的缺陷。 mistake： 最普通用词，泛指思想上、行为上或认识上的判断或理解方面的错误。
shortcoming： 指没有达到所要求的标准、没有充分发展或没尽到职责的不足、缺点或短处。多用复数形式。
defect： 普通用词。指表面上的缺陷，或指人或物本质上的缺点。 slip： 指因疏忽或无意而造成的差错。
37组同义词高频词汇，记完你会有种升级了的感觉【分享】8 0
As a result, redundant data, which are useless to objective classification, are involved in calculation of membership degrees of the objective.
结果对目标分类不起作用的冗余数值被用于计算目标隶属度。
1优势：Advantage, merit(功勋，长处）, virtue（美德，贞操，优点）, benefit, upside, strength，ascendency（优势，优越）, ascendent（幸运星，优势）, dominance（支配地位，优势）, predominance（主导地位，优势）, preponderance(数量上的优势）, superiority（优越性，盛气凌人的行为）.
2 缺陷：Disadvantage, demerit, drawback, downside, weakness, defect, fault, flaw, imperfection,
blemish ，shortcoming.
3解决: Solve, deal with, cope with, handle, resolve, address, tackle
4损害： Damage, hurt, injure, harm, impair, undermine, jeopardize
5给与：Give, offer, render, impart, provide, supply, afford,confer.
6培养：：Develop, cultivate, foster, nurture.
7 使迷惑：Puzzle, bewilder, perplex, baffle，confuse
8 重要的：Key, crucial, critical, important, significant, vital, substantial, indispensable, imperative
9 认为：Consider, reckon, think, believe, insist, maintain, assert, conclude, deem, hold, argue, be convinced, be firmly convinced, be fully convinced，
10 保护：Protect, conserve, preserve, safeguard.
11确保：Assure, ensure, guarantee, pledge
12 有害的： Bad, baneful evil, harmful, detrimental,deleterious(传说这个单词经验最高）
13 要求 ：Request, demand, needs, requisition
14 消除 ：Eliminate, clear, remove, clear up, take away, smooth away，eradicate
15 导致： Lead to, bring about, result in, cause, spark off, conduce to, procure, induce, generate
16 因此：Wherefore,so, therefore, thus, hence, consequently, as a consequence, accordingly, as a result, because of this, as a result of this
17 增长至：Grow to，rise to，increase to，go up to，climb to，ascend to，jump to，shoot to
18降低至：Dip to，fall to，decline to，decrease to，drop to，go down to，reduce to， slump to，descend to，sink to，slide to,level to
19保持稳定：Level out，do not change，remain stable，remain still，remain steady，be stable，maintain the same level，remain unchanged，be still，remain the same level，stay constant，keep at the same level，level off，stabilize，keep its stability，even out
20 急剧地：Dramatically，drastically，sharply，hugely，enormously，steeply，substantially，considerably，significantly，markedly，surprisingly，strikingly，radically，remarkably，vastly，noticeably
21平稳地：Steadily，smoothly，slightly，slowly，marginally，gradually，moderately，mildly
22 宣称：Allege, assert, declare, claim
23 发生：Happen, occur, take place
24 原因：Reason, factor, cause
25 发展：Development, advance, progress
26 有益的：Useful, helpful, beneficial, profitable, rewarding， advantageous
27 影响：Affect, influence, impact, effect,
28明显的：Clear, obvious, evident, self-evident, manifest, apparent, crystal-clear，transparent。 29占：Comprise, take up, account for, constitute, consist of, make up, occupy, hold, compose,provide
30与?相比：Compared with，compared to，in comparison with，in comparison to，by comparison with，by comparison to
31对比而言：By contrast，in contrast，on the other hand，on the contrary=，conversely
32展示：Show, reveal, illustrate, demonstrate, depict, present, represent, describe,unfold,indicate,exhibit
33 大约：Approximately，almost，about，around，nearly，roughly,some
34波动：Fluctuate，go ups and downs，display a fluctuation，demonstrate a fluctuation,wave, unstable.
35事实上：Practically，in practice，essentially，in essence，in reality，in effect，in fact，as a matter of fact，it is a fact that
36换言之：Namely，that is to say，in other words，to put it like this，to put it differently，to put it another way，to put it from another angle.
37美丽：beauty, comeliness, fairness, goodliness, loveliness, pulchritude, pretty, finery, presentability, swanky, magnificent, floweriness,bright
Relevant and related
relevant: [ 'reliv?nt ]
a. 相关的,切题的,中肯的
词形变化: 副词:relevantly
例句与用法:
1. His nationality isn't relevant to whether he's a good teacher. 他的国籍与他是否是位好老师无关。
2. This type of university course is no longer relevant to today's problems. 这类大学课程对当今的问题而言已没有实际价值。
3. She gobbled up all the relevant information. 她如饥似渴地收集一切有关的信息。
4. These facts are relevant to the case. 这些事实和此案有关。
5. The essay isn't even remotely relevant to the topic. 这篇文章毫不切题.
related: [ ri'leitid ]
a. 有关系的,有关联的 v. 讲,有关系 vbl. 讲,有关系
词形变化:
副词:relatedly 名词:relatedness
例句与用法:
1. A variable so related to another that for each value assumed by one there is a value determined for the other.
应变量，函数一个与他量有关联的变量，这一量中的任何一值都能在他量中找到对应的固定值
2. So she took her veil and covered herself. The servant related to Isaac all that had happened.Isaac conducted her into the tent and took her as his wife.
利百家就拿出面纱把脸蒙上。老管家就向以撒讲述了全部经过，以撒把利百加领进帐篷，