睡眠需要因人而异，但通常在6到9个小时之间是必需的，这不仅是为了高效工作，还为了长期的健康。
Sleep needs are individual but usually between 6 and 9 hours is required, not only to effectively, but for long term health.
睡眠需要因人而异，但通常在6到9个小时之间是必需的，这不仅是为了高效工作，还为了长期的健康。
Sleep needs are individual but usually between 6 and 9 hours is required, not only to effectively, but for long term health.
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