他们指出，业余活动在儿童发展中发挥着重要作用，大量的家庭作业减少了孩子的业余时间，阻碍了他们的发展。
They point out that free-time activities play an important role in childhood development and that large amounts of homework reduce children's free time, hindering their development.
就在昨天，我们的家庭有机会在由美国广播公司主办的活动中，向这些流动儿童捐赠美术用品。
Just yesterday our family had the chance to donate art supplies to these migrant children at an event sponsored by ABC.
然而，实际情况却有点复杂，正如我们所看到的那样，高收入家庭的孩子可能有更多的体育活动，因此这些儿童与运动有关的伤害风险较高。
However, the picture is a bit more complicated because we see in high-income families that there is a higher risk of sports-related injuries because their children are more likely to play sport.
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