If disrelish this method trouble, still have another kind of method, besmear equably in freezer compartment wall namely an edible is oily, can make freezer is in for some time not frost.

• 假如嫌这个办法麻烦，还有另一种方法，就是在冷冻室内壁均匀地涂上一层食用油，可以使冰箱在一段时间不结霜。