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しばしば， 屡々， 屡屡， 屡， 数数， 数々， 数
1. often, again and again, frequently, repeatedly
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誤りを犯す， 誤りをおかす， あやまりをおかす
1. to make a mistake, to commit an error, to commit a fault
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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
