Leading seaman (LS or L/S) is a junior non-commissioned rank or rate in navies, particularly those of the Commonwealth. When it is used by NATO nations, leading seaman has the rank code of OR-4.
权威例句
1.
He was first elected to the Commons in 1970, after a career in the merchant navy, where he had been a leading activist in the National Union of Seamen, and study at Oxford's Ruskin College.