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The servants only could use the back staircase.
仆人们只能使用后楼梯。
youdao
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The other one (fire extinguisher) is on the wall at the back staircase.
另一个消防器在后面楼梯的墙上。
youdao
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The other one (fire extinguisher) is on the wall at the back staircase.
另一个消防器在后面楼梯的墙上。
youdao