Group (U V W Y Z) - Spelling Practices

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(1) 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
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(2) ad. Syn. unluckily(不幸地) unluckily; by bad luck
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(3) a. Syn. alone; single; sole(独一无二的) without an equal; being the only one of its kind
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(4) v. (摆脱…的负担,卸) take something off a container
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(5) ad. Syn. unprincipled; immoral(肆无忌惮地,无道德地) unprincipled; immoral; without scruples
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(6) n. Syn. disturbance; outburst(剧变) violent disturbance; sudden, violent disruption or upset
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(7) n. (公用事业公司,公用设备) something useful; public service
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(8) v. Syn. evaporate(蒸发,汽化) turn into vapor, steam, gas, or fog; decrease rapidly and disappear
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(9) a. Syn. successful; triumphant(获胜的,胜利的) successful; being the winner in a contest or struggle
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(10) 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