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 Group (U V W Y Z) - Spelling Practices
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a. Syn. supersonic
(ультразвуковой) supersonic; higher in frequency than the range of sound perceptible to the human ear


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


Spelling Word: undermine
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ad. Syn. unluckily
(К сожалению) unluckily; by bad luck


Spelling Word: unfortunately
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n. Syn. speech
(высказывания) vocal expression; power of speaking; last or utmost extremity


Spelling Word: utterance
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n.
(вакуум) empty area or space; electrical home appliance that cleans by suction


Spelling Word: vacuum
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n.
(клапана) device or structure for controlling the flow of a fluid


Spelling Word: valve
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a. Syn. defective; imperfect
(порочный) by vice or defects; defective; imperfect; having the nature of vice; evil, immoral, or depraved


Spelling Word: vicious
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n.
(Вайн) weak-stemmed plant that derives support from climbing


Spelling Word: vine
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n.
(Вирус) disease communicator; something that poisons one's soul or mind; program for unwanted actions in computer


Spelling Word: virus
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v.
(визуализации) make visual, or visible; see in fancy; form a mental image of


Spelling Word: visualize