Submarine

Gecko published on


 oar = an oarsman; a person who rows a boat

potassium nitrate = KNO3

warfare = military operations between enemies

naval = relating to a navy(= the part of a country's armed forces that is trained to operate at sea)

lurk = move stealthily or be concealed, esp for evil purposes

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.