new
unknown (unspecified) trees的英文翻译是什么意思，词典释义与在线翻译：
英英释义
名词 unknown:
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an unknown and unexplored region
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anyone who does not belong in the environment in which they are found
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a variable whose values are solutions of an equation
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not known
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being or having an unknown or unnamed source
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not known to exist
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not famous or acclaimed
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not known before
