Free dorm bed, reception will arrange bed for you as guests are our priority, and please don't change beds.

驼峰提供的免费床位，遵从客人优先的原则，志愿者需无条件服从总台安排，不得擅自更换床位。

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That's a change, researchers say, that required wolves to begin thinking of humans as their social pals if they were ever to end up asleep at the end of our beds.

研究者们认为狼的驯化是一个很大的转变，野生的狼最终安睡在我们的床畔，这要求狼开始把我们看成它们的社交伙伴。

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Note the grade change of the slope in front and landform edges to consider in future beds and plantings.

请注意前面的斜坡边缘等级和地形的变化会考虑在日后的床铺和种植。

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But most business-class beds aren't wide enough for deep sleep because passengers can't change positions without waking up.

WSJ: The Many Ways to Catch Shut-Eye in the Sky