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æ们æ室å¨äºæ¥¼. Our classroom is on the second floor.
ç¨åºæ°è¯çç®ç¥å½¢å¼ï¼Our classroom is on the 2nd floor.
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举ä¾ï¼Today is March 2nd. ä»å¤©æ¯3æ2æ¥ã