階， かい

1. storey, story, floor 2. stairs 3. stage (in chronostratigraphy) 4. counter for storeys and floors of a building

层；阶，台阶；地层，文化层；阶，层，数量词

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音读: カイ  

训读:きざはし  

日检:2 grade:3 笔画数:12 部首:170