Natural Gas

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deposit = a natural underground layer of rock, coal, or other material

odorless = with no smell

liquefy = make or become liquid

virtue = a good or useful quality of a thing

double-hulled = a tanker which has a double hull(=the body or frame of a ship, most of which goes under the water)

impermeable = not allowing liquid or gas to go through

high dimension

EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.