精选优质文档-倾情为你奉上翻译 1：经常做运动会提高人的自信经常参加体育活动能够提高人们的自信心，这不但对年轻人而且对老人很重要。Participating in sports frequently can boost peoples confidence, which is important not only to the youth but also to the elderly.翻译 2： 依赖计算器会影响人的心算能力（mental arithmetic）。Relying heavily on calculators will have a negative impact on mental arithmetic. 过度依赖计算器可能会对人们的心算能力有负面影响,对孩子的智力发展有威胁。The excessive reliance on calculators is likely to have an adverse impact on childrens mental arithmetic and pose a threat to
