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竜， 龍， りゅう， たつ， りょう
1. dragon (esp. a Chinese dragon)
2. naga, semi-divine human-cobra chimera in Hindu and Buddhist mythology
3. promoted rook
龙
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
