Only when the newest Mr. America or Mr. Universe discovers them and puts them into practice are we reacquainted with them and once again see how effective they really are.

Only once were stalked ciliates found in the mixed liquor.

Only once in a very long while comes a book that gives the reader a magic sense of sharing a rare experience.

Only small, isolated sections are left standing with the largest portion lying in a pile of rubble that stretches the length of where the aqueducts once stood.

Only a small minority of parishes with a priest do not celebrate the Eucharist at least once each Sunday.

Only in the mid-20th century did the Republic's population start to grow once more, but emigration was still common until the 1990s.

Only three other players have achieved this feat more than once: Sir Gary Sobers, Mushtaq Mohammad and Jacques Kallis, who have each done it twice.

Only once, in August 1942, did Ribbentrop attempt to impede the deportations, but only because of jurisdictional disputes with the SS.

Only once before in the tournament's 126-year history had a defending men's champion lost in the opening round, in 1967, when Manuel Santana was beaten by Charlie Pasarell.

Only in 1341 were they once again able to settle in the town, by royal decree.

Only one of the powerups can be active at once, and their effects last for a limited time.

Only once since then has the House of Representatives chosen the President: In 1824, Andrew Jackson received 99 electoral votes, John Quincy Adams ( son of John Adams ) 84, William H. Crawford 41 and Henry Clay 37.

Only once before — when Woodrow Wilson asked Congress to order the U. S. into World War I — had a sitting president addressed Congress at night.

Only once a star has exhausted all its nuclear fuel can it collapse to such a small size, and so planetary nebulae came to be understood as a final stage of stellar evolution.

Only once the connection is opened to the server can the identifying signature be sent and detected, and the connection torn down.

Only once did Hals portray a couple, Isaac Massa and his wife on a single canvas: Double Portrait of a Couple, ( c. 1623, Rijksmuseum Amsterdam ).

Only a few playwrights have been awarded the Pulitzer Prize for Drama more than once.

Despite the apparent evils of Baudelaire, author of Les fleurs du mal, he had once remarked, in regard to the artist, that " The more a man cultivates the arts, the less randy he becomes ... Only the brute is good at coupling, and copulation is the lyricism of the masses.

Only a single egg is laid per nesting attempt, and usually only a single nesting attempt is made per year, although the larger albatrosses may only nest once every two years.

Only once, when they are in bed together, can he not get an erection.

Only small parts of the once enormous heaths and marshlands have survived until modern times.

( Only once in the 2nd century – in 157 BC – did a member of the family become consul.

Only the church and vicar appear the same but he has a shock when he discovers an old girlfriend, for in his eyes she has been so ravaged by time that she is almost unrecognizable and is utterly devoid of the qualities he once adored.

Only few early buildings remain in Placerville: as was the case in most mining towns, Placerville suffered more than once from fires that burned a large part of the town.

Only a few aged box and yew-trees now remain to tell of the luxuriant verdure that once grew around the Abbey.

( Only on platform )

Only the platform and some elements of the columns had been completed by this point, and the temple remained in this state for 336 years.

Only designated spotters may remain on the platform during the lift.

Only three of these ( Sabre Wulf, Underwurlde and Nightshade ) were released on the other major platform of the time, the Commodore 64, however a series of C64-exclusive titles were published by Ultimate:

Only parts of the platform walls were decorated because it was planned to operate the branch with short trains.

Only two King of Fighters games were made on the Atomiswave platform ( The King of Fighters Neowave and The King of Fighters XI ) before SNK decided to discontinue using the platform for the series.

Only three stations or platforms have closed, the two stations on the Royal National Park Branch ( the main station, which closed in 1991, and the platform for the Scout's Camp, which closed in 1947 ), and the station on the Woronora Cemetery branch, which also closed in 1947.

Only half the building was scaffolded at a time and the platform was moved as the painting was done in stages.

Only the island platform of the Red Line level has elevator access.

Only some specialized activities remained until recently in Dublin, such as: IT support for Bank of Ireland and Premier and Professional support for Microsoft on Windows platform, Exchange and SharePoint products.

Only limited interoperability exists between the different platform versions.

Only one will be a Spacebus, the second one is based on a Express-2000 platform.

** Exit Only from the southbound platform, by escalator to the west sidewalk of Yonge, just south of Melinda

Only one name tablet, located on the downtown platform between the last two staircases at the northern end, remained uncovered and survived intact until a few years into the 21st century when a serious water leak after very heavy rainfall caused individual tiles to separate from the wall and fall off.

* Only platform 4 ( London bound ) is currently wheelchair accessible.

Only high-floor vehicles can be used, but wheelchairs can board directly from platforms if vehicle floors are level with the platform.

Only a platform to the north and a section of paving in the courtyard on the south side can still be seen.

Only the two outer railway lines at Kings Norton are electrified fully ( platform 3 is electrified but as a terminal point only ), however the type of cantilever used on the platform means the lines can quite easily be fully electrified should the Camp Hill Line reopen for passenger traffic, though the track layout will need amending.

After a relatively unsuccessful partnership with Peggy Mount in the television series Lollipop Loves Mr Mole ( ITV, 1971 ), the two found a better platform for their talents when they were reunited in Yorkshire TV's You're Only Young Twice ( 1977 – 1981 ), set in a home for the elderly ; the two actresses were to become close friends.