n. backstairs
adj. backstair
另一个消防器在后面楼梯的墙上。
The other one (fire extinguisher) is on the wall at the back staircase.
一个在图书馆外面，另一个在后面楼梯的墙上。
One is outside, the library. The other one is on the wall at the back staircase.
外面有多少人？ -两个正从后面楼梯下来，其余的成扇形搜索。
How many men are out there? Two coming down the back stairs. The rest, they 're fanned out for a search.
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