complicated为正式用词，表由于组成部分太多，相互关系太复杂而不能理解，语气很强。
55. compose, consist, constitute
compose为常用词，常用被动语态，如用主动语态，主语应用复数形式。如：Twelve men compose a jury.(十二人组成陪审团。)
consist表一个整体由几个部分组成(只能用主动语态)。如：The United Kingdom consists of Great Britain and Northern Island.(联合王国是由大不列颠及北爱尔兰组 成。)
constitute为正式用词，与consist相反，表由哪些部分构成整体。如：Twelve months constitute a year.(一年有十二个月。) 56. considerable, considerate
considerable相当多的，可观的。如：He met a considerable amount of trouble.(他遇到了许多麻烦。)
considerate 考虑周到的，体谅的。如：It was considerate of you not to trouble us.(你真体贴人，不打扰我们。)
57. consistent, constant, continual, continuous
consistent一致的，符合的。如：His action is always consistent with his words.
constant不断的，表示持续和惯常的重现，往往没有变化。如：He attributes his health to his constant exercise.
continual频频的，不停的，时断时续，中间可有间歇。如：Continual smoking is bad for health.
continuous不断延伸的，连续不断的，强调中间无间断。如：Everything in the universe undergoes continuous development and change. 58. crack, crash
crack(使)破裂，砸开。如：I can crack it, but I can’t break it. (我能把它弄裂，但不能把它弄破。)
crash摔坏，坠毁。如：The plane crashed shortly after the take-off.(飞机起飞不久就坠毁了。)? 59. crawl, creep
crawl多指蛇，虫类等身体沿地面或其他表面的动作。如：There is an insect crawling up your back. (有一虫子正在你的背上往上爬。)
creep多指哺乳动物或人等用四肢爬行的动物偷偷摸摸无声缓慢的前行动作。如：They arrived late and crept into the classroom.(我们迟到了，便悄悄地溜进教室。) 60. cure, treat
cure治愈，医治。如：The medicine will cure of your disease.(这药能治好你的病。)
cure表示治好，treat只表示“给……治病”。 61. current, present
均可表“现在”，“目前”。
current强调在现阶段正在流行，通用，但不一定是最新的。如：current English (当代英语)
present为常用词，指现在正在通用的，在时间上比current的范围更窄。如：
What’s your present address?(你现住址是哪里？) 62. custom, habit 均可表习惯。
custom为正式用词，多指社团或人们的习惯行为方式。
habit为常用词，多指个人因多次重复而形成做某事的趋势或意愿。如：He has the bad habit of biting his nails.(他有咬手指的坏习惯。) 63. damage, destroy, harm, ruin 均可表“破坏”，“损坏”。
damage一般指部分性的破坏，含可修复使用。
destroy指十分彻底的毁坏，破坏。如：The whole city was destroyed in the earthquake.(地震中整个城市被毁了。)
harm多指带来悲痛，产生恶果的伤害，可以是肉体的也可是精神的。如：Doctors say smoking harms our health.(医生说吸烟对身体有害。) ruin为正式用词，强调由于自然力或时间的作用而逐渐损坏，用于比喻时也指彻底毁坏名声，期望等。如：She poured water all over my painting and ruined it. (她把水倒在画上，把它毁了。)另外，ruin的复数形式ruins表“废墟”。 64. decrease, reduce
decrease多表示逐渐缩小。如：The swelling decreased daily.(肿胀日渐消退。)
reduce为常用词，使用范围较大，可指尺寸，数量，规模和程度等，也可指地位，经济状况。如：He won’t reduce the rent of the house.(他不愿降低房租。)
65. dependent, independent
dependent依赖的，依靠的(on, upon)。如：Success is dependent on your hard work.
Independent 不依靠的，独立的(of)。如：John was independent of his parents when he was still a child. 66. desert, dessert
desert沙漠。如：Have you ever been to a desert?
Dessert甜食。如：What would you like for dessert, an apple pie or ice-cream?
67. discover, invent
discover发现。如：A coal mine has been discovered in that area. invent发明，创造。如：A kind of toothbrush has been invented to relieve toothache.
68. duty, responsibility 均有“责任”之意，可换用。
duty意义较广，多指发自内心的道德伦理上的责任感。
responsibility着重指从道义或法律上对事件之后果负责。如：I took full responsibility for breaking the vase.(我承担打破花瓶的全部责任。) 69. effective, efficient 均可表示“有效的”。
effective常用以指物，强调能产生某种预期的效果。如：effective medicine, effective method等。
efficient“效率高的”，“有能力的”，用以指人或物，着重有效地利用时间、精力并取得预期效果。如：The German telephone system is highly efficient. (德国的电话系统效率很高。) 70. economic, economical
economic经济(学)的。如：the economic doctrines of Ricardo(李嘉图的经济学说)
economical节约的，节俭的。如：He is economical of money and time. 71. electric, electrical, electronic 三词都与电有关
electric着重于发电的，电动的或导电的。如：electric generator(发电机)；electric light(电灯)
electrical多指本身不产生电，但是与电有关的。如：electrical engineering(电机工程)；an electrical transcription(广播唱片)
electronic 电子的，电子操作的。如：electronic engineering(电子工程学)
72. emergence, emergency emergence是emerge的名词形式。
Emergency意为“紧急情况”，“突然事件”。 73. everyday, every day
everyday每日的，日常的(作定语)。如：This morning exercise has become my everyday routine.
every day每天(作状语)。如：She gets up early every day.?
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