prevent frostbite

• 防冻

prevent frostbite的用法和样例：

例句

1. Addition of an anti-freeze agent such as methanol or glycol to the gas stream to prevent hydrates from forming in a gas line.
   往气流中注防冻剂，如甲醇或乙二醇，可防止在气体管道中形成水合物。