目前发现他们是如何耐心教育的材料和工艺的改进和测试可能学习成绩不良。
Discover how their current patient education materials and processes may underachieve and test improvements.
轻到中度受损的表现包括持续而明显的学习成绩不良同时伴有轻度神经和功能受损。
Signs of mild-to-moderate impairment include continual and significant academic underachievement as well as evidence of mild neurological or functional impairment.
较低量接触可降低其智商评分，引起学习障碍、学习成绩不良以及暴力行为，所有这些可促使终生减少收入。
Relatively low levels of exposure can reduce their IQ scores, cause learning disabilities, poor school performance, and violent behaviour, all of which may contribute to reduced lifetime earnings.
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