单词	sound metal
释义	sound metal 优质金属
随便看	undersea telephone system under seat heater undersea tin mine undersea transmission system undersea tube undersea tunnel under sea tunnel undersea vehicles under sea warfare Undersea Warfare Development Division Undersea Warfare Division Undersea Warfare Research under-seawater concrete undersea weapon undersea weaponry Undersea Weapon System undersecretarial undersecretariat undersecretaries Under Secretaries under-secretaries undersecretary Under Secretary under seeded method under seeding