hermetic

adj.

密封的，不透气的；不受外界影响的；炼金术的；深奥的

hermetic seal密封；气密封口

1. The hermetic seal on the packet means that the food lasts longer.
   封袋上的密封印表明食物能保存更长的时间。
2. It's the hermetic confines of an isolated life.
   这是与世隔绝的不受外界干扰的区域。

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