My bed is the upper one of that bunk.
我的床是那张双层床的上铺。
This is your sleeping bed and the upper one is mine.
这是你的卧铺，上面那个是我的。
The upper surface of the bed remains horizontal when the container is tipped.
当容器倾斜时床层上表面保持水平。
The upper surface of the bed remains horizontal when the container is tipped.
当容器倾斜时床层上表面保持水平。
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