Group (E) - Spelling Practices

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(1) n. (回声,发出回声,重复) sound reflected from an opposing surface and repeated to the ear; repetition of a sound
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(2) v. Syn. provoke(得出) draw out; bring forth or to light; generate or provoke as response or answer
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(3) n. (强调,重点) special attention or effort directed toward something; stress
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(4) v. Syn. stress; underscore; highlight(强调,着重) stress; underscore; utter or pronounce with a particular stress of voice
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(5) n. (百科全书) a reference work containing articles on various topics 
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(6) n. Syn. perseverance; stamina; duration(忍耐,持久(力)) perseverance; state or fact of persevering; continuing existence
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(7) n. Syn. costume(全体,歌舞团,套装) union of parts in a whole; a coordinated outfit or costume; a coordinated set of furniture
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(8) n. (实体) real being; something that exists as a particular and discrete unit; fact of existence
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(9) n. (酶) any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions 
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(10) v. Syn. corrode(侵蚀) eat away; wear away by abrasion; become worn