91. dual   adj.  双的，二重的

　　dual degree   双学位

　　the dual number

　　They have the dual ownership of the shop.

　　92. drown   v.    be drowned   溺死， 淹死

　　He fell overboard into the sea and was drowned

　　Do cats drown easily?

　　He saved the drowning boy.

　　drown oneself in : 埋头于     drown out  把…淹没    drown one’s sorrows 浇愁

　　He drowned himself in chatting on line.

　　The noise drown out her voice.

　　The man drowned his sorrows in drink.

　　drown  淹死，淹没 （指生物在水中丧生，也可指 “沉溺于”）

　　sink   下沉，下陷  （指人或物向下陷落，也可引申为“堕落”）

　　wreck  指船“失事”

　　93. duplicate  v. 复制 =copy    n. 复制品   adj. 复制的，完全相同的

　　I have duplicated the key to the office.

　　He has to duplicate thirty notices for the members of the meeting.

　　We have just bought a duplicating machine.

　　If you lost your key, I can give you a duplicate.

　　I opened the door with a duplicate key.

　　We all received duplicate prints of the photographs

　　94. dynamic   adj.  精力充沛的  =energetic

　　He is so dynamic that he can work for more than ten hours a day.

　　She looks dynamic every day.

　　He is dynamic as he used to be.

　　95. elaborate   adj.  详细阐述的  detailed

　　We have worked out an elaborate plan for the holiday.

　　He gave us the elaborate account of the accident.

　　96. eligible    adj.  有条件，有资格（参加或被选为）  qualified for

　　be eligible for / to

　　Anyone who can speak English is eligible to join the club.

　　Those who passed all the exams are eligible for the election.

　　Only citizens are eligible to vote.

　　97. elite   n.  精华，精英，杰出的人物   famous people

　　He is an educated elite.

　　Most people in this company are elites.

　　He was voted as one of the elites for 2006 in the city.

　　98. embargo   n.  禁运      vt.  禁运，禁止（船只）出入港口

　　We all know the gold embargo.

　　The government embargoed some of the goods in the new policay.

　　99. emerge   vi.   出现，显现   =appear

　　The moon emerged from behind the clouds.

　　(He emerged from behind the tree.)

　　No new ideas emerged during the talks.

　　We saw a whale emerging from the water.

　　100. encounter  vt.  遭遇，遇到

　　I encountered my old friend in the street yesterday.

　　They encountered unexpected difficulties in completing the task.

　　The plane encountered a storm.

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