台湾籍旅美老师今天交给我们的句子是：

The important part is that most chemical and biological processes run slower at lower temperatures, which means that if you cool food a lot, enzymes and bacteria and fungi in the food get too cold to decompose it.
重要的是，多数生物反应与化学变化在低温下进行得较缓慢。也就是，冷藏食物就能使酵素、细菌、真菌更难将食物分解。