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
病気, びょうき
1. illness (usu. excluding minor ailments, e.g. common cold), disease, sickness
2. bad habit, bad behaviour, weakness, failing
3. crazy, insane, disturbed, sick in the head
病,疾病