结果我发现这家餐厅关门了，原因是他们发现食材供应商那里有大量的老鼠屎。
They were being closed down today because a large amount of rat droppings was found in their food supplies.
养殖鲑鱼的话需要在水中投放鱼食和营养，这样就会导致饲料的浪费及大量的鱼屎堆积。
Salmonfarming relies on the release of fish food and nutrients into the water, which always results inwasted feed and a huge amount of fish droppings in the water.
应用推荐