Question
Actualizado en
16 jul 2017
- Japonés
-
Inglés (US)
Pregunta de Inglés (US)
¿Qué significa Blast doors ?
¿Qué significa Blast doors ?
A subterranean city beneath Helsinki forms a crucial line of defense for the capital. Finnish soldiers routinely train here, with a mission to keep Finland’s government running and city residents safe in a network that features more than 124 miles of tunnels, passageways and shelters.
Much of the network has been adapted over recent decades with defense in mind. Blast doors seal entrances. Passageways are adapted so the military—with a regiment dedicated to controlling the tunnels—can contain enemy infiltrators. Utility and subway tunnels provide arteries for communications, water supply and Wi-Fi. There is enough shelter space for all city’s more than 600,000 residents in the event of an attack or disaster.
Much of the network has been adapted over recent decades with defense in mind. Blast doors seal entrances. Passageways are adapted so the military—with a regiment dedicated to controlling the tunnels—can contain enemy infiltrators. Utility and subway tunnels provide arteries for communications, water supply and Wi-Fi. There is enough shelter space for all city’s more than 600,000 residents in the event of an attack or disaster.
Respuestas
16 jul 2017
Respuesta destacada
- Inglés (US)
"Blast doors" in the sentence means doors that can withstand or sustain damage from explosives. These types of doors are very secure, and are usually really thick and made out of strong materials.
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- Inglés (US)
"Blast doors" in the sentence means doors that can withstand or sustain damage from explosives. These types of doors are very secure, and are usually really thick and made out of strong materials.
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- Japonés
- Inglés (US)
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