大多数人每晚需要7- 8小时睡眠，如果必要用闹钟设定你的就寝时间，始终保持你的卧室凉爽舒适。
Most people require between 7 and 8 hours each night. If needed, set a bedtime reminder alarm on your alarm clock. Always keep the temperature in your bedroom comfortably cool.
大多数人每晚需要7- 8小时睡眠，如果必要用闹钟设定你的就寝时间，始终保持你的卧室凉爽舒适。
Most people require between 7 and 8 hours each night. If needed, set a bedtime reminder alarm on your alarm clock. Always keep the temperature in your bedroom comfortably cool.
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