v.除霜；解冻
It will take about four hours to defrost. 解冻要花四小时左右。
A frozen chicken should be allowed to defrost completely before cooking. 冻鸡应彻底解冻后再烹调。
n.溶解；解冻；除霜
动词defrost的现在分词形式.
n.除冰装置；防结冰装置
