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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ad. Syn. unluckily
(不幸地) unluckily; by bad luck


Spelling Word: unfortunately
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a. Syn. alone; single; sole
(独一无二的) without an equal; being the only one of its kind


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


Spelling Word: unload
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ad. Syn. unprincipled; immoral
(肆无忌惮地,无道德地) unprincipled; immoral; without scruples


Spelling Word: unscrupulously
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n. Syn. disturbance; outburst
(剧变) violent disturbance; sudden, violent disruption or upset


Spelling Word: upheaval
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n.
(公用事业公司,公用设备) something useful; public service


Spelling Word: utility
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v. Syn. evaporate
(蒸发,汽化) turn into vapor, steam, gas, or fog; decrease rapidly and disappear


Spelling Word: vaporize
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a. Syn. successful; triumphant
(获胜的,胜利的) successful; being the winner in a contest or struggle


Spelling Word: victorious
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a. Syn. changeable; explosive; fickle
(挥发的,飞行的,可变的,爆炸的) tending to vary often or widely, as in price; inconstant or fickle; tending to violence


Spelling Word: volatile