rough floor

例句：

1. 1. The rough floor made it hard to walk on.
   粗糙的地板使得走路很困难。
2. 2. The old house had a rough floor that needed fixing.
   这所旧房子有一块需要修理的粗糙地板。
3. 3. The rugged terrain of the mountain made it difficult for the climbers to reach the summit.
   崎岖的山地让登山者难以到达山顶。