Stories of USA Today
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 4000 Duolingo (U - Z) - Spelling Practices
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a. 不能架橋的,不能逾越的 impassable; unable to be bridged or crossed; impossible to span


Spelling Word: unbridgeable
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a. 無條件的,無限制的,絕對的 made without condition; absolute; unreserved


Spelling Word: unconditional
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a. 不加疑問的,不猶豫的 not inclined to ask questions; being without doubt or reserve


Spelling Word: unquestioning
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n. 理想主義的,空想的 idealistic but usually impractical social reformer


Spelling Word: utopian
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n. 疫苗 harmless form of the germs that cause a disease to prevent people from getting the actual disease


Spelling Word: vaccine
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a. 巨大的,大量的,範圍廣的 large; broad; extensive; very great in size, number, amount, or quantity


Spelling Word: vast
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n. 船,液體容器 craft; ship; container for liquids


Spelling Word: vessel
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n. 暴力,強暴 the physical force exerted to violate, damage, or abuse


Spelling Word: violence
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a. 火山的 explosively unstable;  relating to volcanoes


Spelling Word: volcanic
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a. 自願的,志願的 done or undertaken of one's own free will; unforced


Spelling Word: voluntary