hermetically seal

verb

(transitive) To seal with an airtight seal. / (transitive) To isolate from external influences or prevent escape from.

He hermetically sealed the container to keep the food fresh.

意味（1）

(transitive) To seal with an airtight seal.

They hermetically sealed the kettles to accelerate the cooking.

意味（2）

(transitive) To isolate from external influences or prevent escape from.

We were hermetically sealing ourselves within the seemingly safe cocoon of groupthink.