护封

例句：

1. 1. The package was sealed with adhesive tape.
   这个包裹用胶带密封了。
2. 2. The box is protected by a sturdy plastic cover.
   这个盒子由坚固的塑料套子保护着。
3. 3. The product must be kept in its protective packaging until it is opened.
   该产品必须保持其保护性包装直到打开为止。