protective cover

名词 protective cover:

1. a covering that is intend to protect from damage or injury
   同义词：protective covering, protection

1. A thick protective cover similar to or suggestive of a quilt.
   被状物与被子相似的或使人能联想到被子的一种厚实的保护性遮盖物
2. A clear glass or plastic protective cover for the face of a watch or clock.
   水晶面一个覆盖在钟表表面的、起保护作用的透明玻璃或塑料片