词典释义：
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Second of all, the door to the stairwell of the other building was locked, so I had to go down the fire escape, which ends on the third floor, forcing me to crawl through the window of a lovely Armenian family who insisted I stay for lunch.
其次，那扇通往旁边那幢楼的楼梯井门是锁着的，所以我不得不从防火梯下楼，可那只是到三楼的，逼我只能从一个"可爱"的亚美尼亚家庭的窗户爬了进去，他们还强留了我吃午饭。
《The Big Bang Theory Season 1》《生活大爆炸 第一季》
双语例句
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Canty's tribe occupied a room on the third floor.
康第一家住在三楼的一个房间里。
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Our classroom is on the second floor, and theirs is on the third floor.
我们的教室在二楼，他们的在三楼。
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Four bedrooms are on the second floor, while the fifth is on the third floor.
有四间卧室在二楼，第五间在三楼。
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At that second knock, a window on the third floor opened and the same Snail looked out.
第二次敲门时，三楼的一扇窗户打开了，还是那只蜗牛往外看。
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I sleep on the third floor.
我睡在3楼。