must be severe and persistent
... mistakes, can't follow instructions, forgetful 粗心犯错,不能听从指令,健忘 Must be severe and persistent 必须严重且持续 Present for at least 6 months and cause impairments in functioning 持续至少六个月并产生功能的受损 ..
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must be severe and persistent
必须严厉和持久
以上为机器翻译结果，长、整句建议使用 人工翻译 。