isolar, vedar, lacrar, cerrar herméticamente
1. To close off or isolate an area completely, preventing access or escape
The police sealed off the crime scene to prevent contamination.
A polícia isolou a cena do crime para evitar contaminação.
2. To close something tightly or hermetically to prevent air, water, or other substances from entering or leaving
We sealed off the windows to keep out the cold air.
Vedamos as janelas para evitar que o ar frio entrasse.
3. To block or barricade an entrance or exit
The building was sealed off due to the gas leak.
O edifício foi fechado devido ao vazamento de gás.
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