慢速英语:Screen Time: How Much Is Too Much?

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短语讲解：

1. Many children spend a lot of time watching or playing with electronic media – from televisions to video games, computers and other devices.

a lot of 诸多; 许多的
例句：I am spending a lot of money and time on this boat, but it is worth it
我在这艘船上花了很多金钱和时间，但都很值得。

2. Perhaps parents should ease up on their concerns about screen time, at least for older boys and girls.

ease up 移动; <非正>减轻，放松; 和缓; 散心
例句：He told supporters not to ease up even though he's leading in the presidential race
他告诉支持者们即使眼下他在总统选举中领先也不要松懈。
concern about 使（自己）关心…
例句：The group has expressed concern about reports of political violence in Africa
该团体对有关非洲政治暴力的报道表示关切。

3. Turn off your child’s electronic devices an hour before bedtime.

turn off （把…） 关掉; 完成; 解雇; 转向
例句：The truck turned off the main road along the gravelly track which led to the farm
卡车驶离大路，沿着通向农场的碎石小道行进。

4. He notes a lack of evidence supporting reports that too many hours spent playing video games or watching TV is truly harmful.

a lack of 缺乏，缺少
例句：I was hampered by a lack of information.
我受到了信息不足的牵累。