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As they pass by, a piteous wailing is heard.他们经过时，响起了令人哀怜的恸哭。The dog gave a piteous cry.这狗发出可怜的叫声.Nothin but a piteous lowercase $ 500 justness in a chronicle shelter policy.只有一份可怜的500美元的人寿保险....
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质子的质量几乎是电子的2,000倍。Protons are nearly 2000 times as heavy as electrons.质子是物质的基本粒子。A proton is an elementary particle of matter.中子和质子构成了原子核.The neutrons and protons form the core of the atom....
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n.一种齿苋...
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n.节日( festival的名词复数 )，节期，（音乐、戏剧、电影等的）会演...
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Data from Voyager II has presented astronomers with a puzzle about why our outermost planet exists...“旅行者二号”发回的数据给天文学家们提出了一个难题：离我们最远的那颗行星为什么会存在。Somehow the geriatric Voyager 2, arthritic and partially deaf, managed to re...
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abolitionism的音标：...
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Aim study the characteristic of the hemolysin of Edwardsiella tarda.目的研究迟缓爱德华菌溶血素的特征.Abstract: Aim study the characteristic of the hemolysin of Edwardsiella tarda.文摘: 目的研究迟缓爱德华菌溶血素的特征.LHC could significantly increase hem...
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“姑母”的拼音为：gū mǔ...
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kaleidoscopes的音标：...
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“久霉素”的拼音为：jiǔ méi sù...
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他们将集中教授阅读、写作和算术基础知识。They will concentrate on teaching the basics of reading, writing and arithmetic.他用这个节目的录像带教授英语。He uses tapes of this program to teach English.这本书对于教授文学的老师来说帮助非常大。The book is an invaluable aid to teach...
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gravy的音标：gravy的英式发音音标为：['greɪvi]gravy的美式发音音标为：['ɡrevi]...
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n.书签...
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n.叶柄，中足...