不干不净

例句：

1. 1. The room was not very clean when we arrived.
   我们到达时，房间不是很干净。
2. 2. Please make sure the dishes are washed before leaving the table.
   请确保在离开餐桌前把餐具洗干净。
3. 3. The floor is not very clean in this area.
   这个区域的地板不是很干净。