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jiˎ₄疑naanˎ₄難
(疑难)
Pinyin
yi2 nan2
Translations
noun
difficult to solve; complex (problem)
jiˎ₄疑naanˎ₄難zaapˍ₆雜zing˗₃症
(疑难杂症)
Pinyin
yi2 nan2 za2 zheng4
Translations
noun
knotty and complicated cases