Stories of USA Today
Materials for Reading & Listening Practice
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 Group (U V W Y Z) - Spelling Practices
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a. Syn. supersonic
(超音速的,超声(波)的) supersonic; higher in frequency than the range of sound perceptible to the human ear


Spelling Word: ultrasonic
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v. Syn. weaken
(破坏) weaken by wearing away base or foundation; injure or impair; dig a mine or tunnel beneath


Spelling Word: undermine
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v.
(摆脱…的负担,卸) take something off a container


Spelling Word: unload
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a.
(笔直的,直立的,柱子,直立物) in an erect position or posture; perpendicular; vertical, or nearly vertical; pointing upward


Spelling Word: upright
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n. Syn. exigency; emergency
(紧急情况) emergency; pressing importance; need; pressing necessity


Spelling Word: urgency
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n. Syn. outlet
(出口,出路) small opening; means of escape or release; outlet; hole for the escape of gas or air


Spelling Word: vent
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a. Syn. feasible; practicable
(能养活的,可行的) practical or workable; capable of maintaining life; capable of continuing effectiveness


Spelling Word: viable
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a. Syn. turbulent
(暴力引起的,暴烈的) turbulent; intensely vivid or loud; by violence or bloodshed


Spelling Word: violent
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n.
(小提琴,小提琴手) small instrument with four strings, played with a bow; a fiddle


Spelling Word: violin
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v.
(使显现,使形象化) make visual, or visible; see in fancy; form a mental image of


Spelling Word: visualize