cold chain
noun [ C usually singular ] uk/ˈkəʊld ˌtʃeɪn/ us/ˈkoʊld ˌtʃeɪn/
冷链（指低温运输食品或医疗产品的过程）
a system of transporting something such as food or a medical product from where it is produced to the customer or patient, in which the product is kept cold at every stage
Health staff are trained in the importance of maintaining the vaccine cold chain. 卫生人员接受培训，了解维护疫苗冷链的重要性。
Fresh food requires a cold chain all the way from the point of production to the retail outlet. 新鲜食品需要从生产点到零售点的全程冷链。
- More examples
- The efficacy of live vaccines may be compromised unless they are kept at the right temperature at every stage of the cold chain from manufacturer to recipient.
- 20,000 members of the supermarket's staff are involved in the cold chain, and understand the importance of maintaining chilled and frozen foods at the correct temperature.
- Hygiene and security are strong priorities for the seafood company; they offer clients ice and special containers to maintain the cold chain.
- Investment in cold chains is a must because that is where most food wastage happens.