上层楼面;

Visitors should make their way at once to the upper floor By way of the staircase.
来宾请立即经楼梯到楼上去. (庄重体)
来源:互联网摘选Many students were trapped by smoke and fire on an upper floor.
许多学生被浓烟和大火困在了较高的一层上。
来源:《柯林斯高阶英汉双解学习词典》He has the upper floor and ramps are fitted everywhere for his convenience.
他住在上面一层,为了他的方便着想,到处设有坡道.
来源:词典精选例句
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