self-sealing wrapping

例句：

1. 1. This self-sealingwrapping is easy to use and convenient forstoring food.
   这种自封包装使用方便，便于储存食物。
2. 2. The self-sealingtape was a great help in sealingthe package securely.
   这种自封胶带在密封包装时起到了很好的帮助作用。
3. 3. Self-sealing plastic wrap is widely used inhouseholds to protect food from spoilage.
   自封塑料包装被广泛用于家庭中，以保护食物免受变质。