就像去年一样，你必须付出更多的努力才能够达到有形的结果。
Just like last year, you will have to work hard to arrive at tangible results.
这种评估既包括对认知行为变化的评价，也包括对一些有形的结果的评价。
That includes measuring cognitive and behavioral changes as well as tangible improvements in results.
目前没有研究显示为什么大量阅读会导致这一结果，但是由于长时间聚焦近处的物体需要眼部肌肉持续收缩以保证视网膜保持需要的形状，因此这种眼肌的持续收缩状态可能会使眼球受到拉伸，长期如此，其原有形状可能会被永久地改变，从而导致近视产生。
But focusing on close objects involves contraction of muscles controlling the shape of the eye's lens. And one possibility is that "this constant contraction may stretch the eyeball.
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