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clean up，dump，purge，reset，clean out ；

[例句] 牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。 When not removed, plaque causes tooth decay and gum disease.

[例句] 他们从上层文职部门清除了上千名公务员。 They have purged thousands from the upper levels of the civil service.

put in order，clean，disentangle，check up，clean up ；

[例句] 只要提出要求，清理房间的女服务员就会送来熨斗或电吹风。 Chambermaids will bring an iron or hair dryer on request.

[例句] 我临走时特地事先把办公桌清理了一下。 I took the precaution of clearing out my desk before I left.

clear ，square，settle accounts，expose and criticize，bring to account ；

[例句] 法国的一家制药公司陷入资金周转问题，面临清算的危机。 A French-based pharmaceuticals company ran into cash-flow problems and faced liquidation.

[例句] 清算破产公司的资产值其实很困难。 It is proving hard to work out the value of bankrupt firms' assets.

limpid，vivid，distinct，clear，in focus ；

[例句] 入口处在马伯里路，有清晰的路标。 The entrance is well signposted and is in Marbury Road.

[例句] 她的故事让人清晰地回忆起意大利的乡村生活。 Her story is sharply evocative of Italian provincial life.

cleaning，clean，cleanliness，cleanness，cleansing ；

[例句] 餐后要刷牙，而且每天要使用牙线清洁牙缝。 Brush your teeth after each meal and floss daily.

[例句] 电动汽车迷们说，电动车清洁、无噪音而且经济。 Fans of electric cars say they are clean, quiet and economical.

clear，distinct，lucid，be clear about，clarity ；

[例句] 老板总喜欢把这类事情搞清楚。 Bosses have a way of always finding out about such things.

[例句] 他越来越清楚地认识到引起紧张局势的原因。 He became more aware of the things that started that tension off.

pay off，clear off，discharge，tender ；

[例句] 我将用这张支票清偿欠债. I'll pay off my debt with this check.

[例句] 这种帐户的利息在清偿时支付. The interest on this account will be paid at redemption.

wash，clean，purge，comb out，cleanout ；

[免疫] serum，blood serum ；

[例句] 这种药物通过提高大脑中血清素的含量来产生疗效。 The drug works by increasing levels of serotonin in the brain.

[例句] 他们正在测定血清蛋白和胆固醇的浓度. They are determining the serum - protein and cholesterol levels.

articulation，legibility，clarity，intelligibility，definition ；

[例句] 这项卓越技术的清晰度比常规的X光高得多。 This remarkable technology provides far greater clarity than conventional x-rays.

[例句] 他们致力于提高该光学影像的清晰度. They concentrated on better definition of the optical image.

pure，clean，unsullied，have clean hands，cleanly；

[例句] 他是清白的，是受人诬陷的。 He was innocent and the victim of a frame-up.

[例句] 避税的指控使他的清白形象蒙污。 Accusations of tax evasion have tarnished his clean image.

limpid，clear，limpidity，limpidness，lucidity ；

[例句] 他有一双清澈的蓝眼睛和一脸灿烂的微笑。 He has clear blue eyes and a dazzling smile.

[例句] 他有一双清澈的蓝眼睛和凸出的下巴。 He had clear blue eyes and a jutting chin.

clear-headed，sober，come to，come round ；

[例句] 夜里他的痛苦是减轻了，但人也不那么清醒了。 The pain had lessened in the night, but so had his lucidity.

[例句] 一想到要被判刑，他的头脑就会变得非常清醒。 A term in prison will concentrate his mind wonderfully.

clear，clean，cleaning，rid，clearing ；

[例句] 拿扫帚把那些玻璃清扫干净好吗？ Get a broom and sweep up that glass will you?

[例句] 幸运的是，干清扫落叶这个活儿是值得的。 Fortunately, the chore of leaf sweeping is well worth the effort.

fresh and cool，brisk，easy，light，cleanlily ；

[例句] 清爽宜人的夏夜 a balmy summer evening

[例句] 清爽的柠檬味 the tang of lemons

eliminate，clean up，mop up，root out，housecleaning ；

[例句] 陆军各师肃清了残余的抵抗据点。 The infantry divisions mopped up remaining centres of resistance.

[例句] 他们向警方发出了最后通牒，要求肃清整个地区的种族主义暴徒，否则他们将自行采取行动。 They issued an ultimatum to the police to rid an area of racist attackers, or they will take the law into their own hands.

clear，transparent，clear up，clarify；

[例句] 本次初步会议的目标是澄清这些问题。 The aim of this initial meeting is to clarify the issues.

[例句] 我们敦促各学院和大学澄清其甄选学生的过程。 We urge colleges and universities to demystify the selection process.

pure and fresh，fresh ；

[例句] 彻底刷牙有助于口气清新。 A thorough brushing helps to freshen up your mouth.

[例句] 空气稀薄清新，其间日光蒙眬，寒气逼人。 The air was thin and crisp, filled with hazy sunshine and frost.

branch water，eau douce，rinsing ；

[例句] 每次用完洗发剂后都要用清水将头发冲洗几次。 After shampooing, always rinse the hair several times in clear water.

[例句] 要泡开西红柿干，需要将其放在清水中用文火炖，直到它们变软。 To reconstitute dried tomatoes, simmer in plain water until they are tender.

honest and upright，free from corruption，incorruptibility，incorruptness，rectitude ；

[例句] 这桩交易破坏了他的清廉形象。 The deal destroyed his image as Mr. Clean.

[例句] 他因其清廉而深受大家的尊敬. He is highly respected by everyone for his integrity.