sealed outer housing

例句：

1. 1. The new car has a sealedouter housing to protect the engine.
   这款新车有一个密封的外壳来保护发动机。
2. 2. Theengineer sealed the outer housing with a specialsealant.
   工程师用一种特殊的密封剂密封了外壳。
3. 3. The outer housing of the computeris made of high-quality plastic.
   计算机的外壳是用高质量的塑料制成的。