storey ['stɔ:rɪ]

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n.楼层；楼的一层

a level of a building

There's a nine-storey apartment building next to the bank. 银行旁边有一座九层高的宿舍大楼。
Tom's sister says he is weak in the upper storey. 汤姆的妹妹说他脑子笨。