grease pit

例句：

1. 1.The grease pit was filled with a thick layer of oil.
   油渣里堆满了厚厚的一层油。
2. 2. The grease pit was a constant source of pollution.
   油渣是污染的常客。
3. 3.The grease pit was cleaned up after the fire.
   火灾过后，清理了油渣。