但如果他们经常饮用它，然后再停止饮用，他们就会觉得疲乏，并表现不佳。
But if they're consuming it frequently and then go without, they'll feel tired and won't perform well.
看电视给我们以巨大的快乐同时也增长了我们的知识，但花再这上面太多时间又会伤害我们的眼睛，使人感到疲乏。再工作之余偶尔锻炼一下身体才是明智的。
Watching TV can bring us a lot of pleasure and teach us a lot, but spending too much time on it may do harm tour eyes and make us tired. So we should do sports at times when we are free from work.
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