difficult改为名词 difficult名词怎么转换？
difficult的名词形式是difficulty，复数形式是difficulties。1、difficult可用作定语、表语或宾语补足语。2、作表语时,后面可
difficult的副词 difficult副词？
difficult副词。。difficult的词性转换。。difficult的词性转换为名词是difficulty。形容词是difficult。副词是diffi
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