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 4000 FCE (U - Z) - Spelling Practices
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a. 无法忍受的,承受不住的 unendurable; so unpleasant, distasteful, or painful as to be intolerable


Spelling Word: unbearable
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a. 不懂世故的,单纯的 not wise; innocent; lacking complexity


Spelling Word: unsophisticated
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a. 未使用的 not drawn upon or used


Spelling Word: untapped
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n. 教育,教养 process of bringing up, nourishing, or maintaining; rearing and training received during childhood


Spelling Word: upbringing
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v. 维护,支持 support; preserve; hold aloft; raise


Spelling Word: uphold
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n. 真空 empty area or space; an electrical home appliance that cleans by suction


Spelling Word: vacuum
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a. 无用的,无结果的,枉然 having no real substance, value, or importance; empty; void; worthless; unsatisfying


Spelling Word: vain
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n. 蒸发 process of becoming vapor; conversion of a solid or a liquid into a gas


Spelling Word: vaporization
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n. 毒液,恶毒 poison; poisonous secretion of animals, such as snake or spider; spite


Spelling Word: venom
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a. 有效的,实质的,虚的 existing or resulting in essence or effect though not in fact; existing in mind, especially as a product of imagination


Spelling Word: virtual