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ろくでなし, ロクデナシ, 碌でなし, 陸でなし, 碌で無し, ろくで無し
1. bum, good-for-nothing, ne'er-do-well
tbd
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