arcade N. /拱廊/a covered passageway, usually lined with shops. The arcade was popular with shoppers because it

　　gave them protection from the summer sun and the winter rain.

　　arcane ADJ. /秘密;谜/secret; mysterious; known only to the initiated. Secret brotherhoods surround themselves with

　　arcane rituals and trappings to mystify outsiders. So do doctors. Consider the arcane terminology they use and the impression they try to give that what is arcane to us is obvious to them.

　　archaeology N. /考古学/study of artifacts and relics of early mankind. The professor of archaeology headed an

　　expedition to the Gobi Desert in search of ancient ruins.

　　archaic ADJ. /过时的/antiquated. "Methinks," "thee," and "thou" are archaic words that are no longer part of our normal

　　vocabulary.

　　archetype N. /原形/prototype; primitive pattern. The Brooklyn Bridge was the archetype of the many spans that now

　　connect Manhattan with Long Island and New Jersey.

　　archipelago N. /群岛/group of closely located islands. When Gauguin looked at the map and saw the archipelagoes

　　in the South Seas, he longed to visit them.

　　archives N. /档案;档案馆/public records; place where public records are kept. These documents should be part of the

　　archives so that historians may be able to evaluate them in the future.

　　ardent ADJ. /激烈的;热心肠的;有激情的/intense; passionate; zealous. Katya's ardor was contagious; soon all her fellow

　　demonstrators were busily making posters and handing out flyers, inspired by her ardent enthusiasm for the cause. ardor, N.

　　arduous ADJ. /努力;奋发/hard; strenuous. Her arduous efforts had sapped her energy.

　　aria N. /清唱剧/operatic solo. At her Metropolitan Opera audition, Marian Anderson sang an aria from Norma. arid ADJ. /荒芜的/dry; barren. The cactus has adapted to survive in an arid environment.

　　aristocracy N. / 贵族/hereditary nobility; privileged class. Americans have mixed feelings about hereditary

　　aristocracy. we say all men are created equal, but we describe particularly outstanding people as natural aristocrats.

　　armada N. /舰队/fleet of warships. Queen Elizabeth's navy defeated the mighty armada that threatened the English

　　coast.

　　aromatic ADJ. /芬芳的/fragrant. Medieval sailing vessels brought aromatic herbs from China to Europe.

　　arousal N. /觉醒;激励/awakening; provocation (of a response). On arousal, Papa was always grumpy as a bear. The

　　children tiptoed around the house, fearing they would arouse his anger by waking him up.

　　arraign V. /传讯;责问/charge in court; indict. After his indictment by the Grand Jury, the accused man was arraigned in

　　the County Criminal Court.

　　array V. /排列;整理/marshal; draw up in order. His actions were bound to array public sentiment against him. also N. array V. /衣服;穿着，装饰/clothe; adorn. She liked to watch her mother array herself in her finest clothes before going

　　out for the evening. also N.

　　arrears N. /欠债/being in debt. He was in arrears with his payments on the car.

　　arrest V. /阻止;引起注意;吸引/stop or slow down; catch someone's attention. Slipping, the trapeze artist plunged from

　　the heights until a safety net luckily arrested his fall. This near-disaster arrested the crowd's attention.

　　arrogance N. /傲慢，骄傲/pride; haughtiness. Convinced that Emma thought she was better than anyone else in the

　　class, Ed rebuked her for her arrogance.

　　arroyo N. /干枯的河床/gully. Until the heavy rains of the past spring, this arroyo had been a dry bed.

　　arsenal N. /军火库/storage place for military equipment. People are forbidden to smoke in the arsenal for fear that a

　　stray spark might setoff the munitions stored there.-

　　articulate ADJ. /有效的;独特的/effective; distinct. Her articulate presentation of the advertising campaign impressed her

　　employers. also V.

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