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病弱， びょうじゃく
1. weak (constitution), sickly, feeble, in poor health
tbd
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心配， しんぱい
1. worry, concern, anxiety, uneasiness, fear
2. care, help, aid, assistance
担心
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
