It was the sleepiest of sleepy days.

这是最令人发困的日子。

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And it's the teenagers who are the sleepiest of all, with baby boomers getting the most sleep.

如此说来，青少年是睡眠质量最糟糕的一群人，婴儿潮的人群能得到最好的睡眠质量。

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