sheath for magnet coils

例句：

1. 1. The sheath protects the wire from damage.
   护套保护电线免受损坏。
2. 2. The sheath is madeof leather and has a zipper onthe front.
   护套由皮革制成，前面有拉链。
3. 3. The sheath isdesigned to fit snugly around thecable.
   护套设计得可以紧密地套在电缆上。