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All spacemen must be able to bear acceleration.所有太空人都应能承受加速度.She said with a straight face she saw green spacemen in the back yard.她面无表情地说她在后院看到绿色外星人.There are five spacemen in the spaceship.宇宙飞船里有五个飞行员....
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deface的第三人称单数（三单）为：defaces...
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laces的音标：...
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He wore leg braces after polio in childhood.他幼时得过小儿麻痹症后双腿安上了支架。The table is shaky because the braces are loose.这张桌子摇摇晃晃,因为支架全松了.You don't need braces if you're wearing a belt!要系腰带,就用不着吊带了....
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deface的现在完成时为：defaced...
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enface的一般过去时为：enfaced...
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traced的音标：...
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adj.蜡状的，蜡质的...
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n.鲸目动物( cetacean的名词复数 )...
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On new wood - burning fireplaces, first determine what you are burning.对于一台新的燃木壁炉, 气味的问题首先取决于燃烧物.When the central - heating was installed, the fireplaces were walled up.安装暖气设备之后, 便把壁炉封闭起来了.The shop was an old converted h...
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diisopropylideneacetone的音标：diisopropylideneacetone的英式发音音标为：[dɪsɒprɒpɪlaɪde'ni:sɪt]diisopropylideneacetone的美式发音音标为：[dɪsɒprɒpɪlaɪde'nisɪt]...
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n.赛马跑道，赛马场( racecourse的名词复数 )，（赛马、赛车、赛跑的）跑道...
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grace的第三人称单数（三单）为：graces...
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metacestode的音标：metacestode的英式发音音标为：[metəses'təʊd]metacestode的美式发音音标为：[metəses'toʊd]...
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Euphorbia kansui L. ( Euphorbiaceae ) is abundantly distributed in the northwesten China.生药甘遂为大戟科[euphorbiacea]植物甘遂[ Euphorbia kansuiL. ]的干燥块根....
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n.丙酮...
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acerbating的音标：acerbating的英式发音音标为：['eɪsɜ:beɪtɪŋ]acerbating的美式发音音标为：['eɪsɜbeɪtɪŋ]...
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n.恩泽，优雅，慈悲，魅力v.使优美，惠赐...
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retraces的音标：...
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aerospaceplane的音标：aerospaceplane的英式发音音标为：[eərəʊspeɪ'sɪpleɪn]aerospaceplane的美式发音音标为：[eəroʊspeɪ'sɪpleɪn]...
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lacerate的现在进行时为：lacerating...
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醋代萘烷...
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n.和平，和睦，治安，安心...
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He denies demanding money with menaces.他否认有过勒索钱财的行为。I laughed in my sleeve at his menaces.对于他的恐吓,我暗自好笑.Submarine and carrier aircraft were the menaces the great guns could not fight.潜艇和航空母舰上的飞机,构成了那些大炮无法应付的威胁....
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disgrace的音标：disgrace的英式发音音标为：[dɪs'greɪs]disgrace的美式发音音标为：[dɪs'ɡres]...
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Gordiacea的音标：...
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trace的一般过去时为：traced...
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isospace的音标：isospace的英式发音音标为：['aɪsəspeɪs]isospace的美式发音音标为：['aɪsəspeɪs]...
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乙酰香豆素...
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This paper discussed three methods of producting vinyl etherspreparation from acetylene, dehydrohalogenation and acetals.论述了乙烯基醚类化合物的三种主要制备方法乙炔法 、 脱卤化氢法和缩醛热分解法.Allene is an isomer of methyl acetylene.丙二烯是甲基乙炔的一种异构体.In th...