Discard cooked, unrefrigerated foods after 2 hours at room temperature, regardless of appearance.
无论外观如何，处于室温下2小时后，煮熟的和没有冷藏的食物都扔掉。
2
It was also discovered that as muck as 3/4 of a gallon of milk could sit in that section of pipe unrefrigerated for long periods, allowing for a large growth of bacteria.