With the power units we'll prevent its release until the proper moment.

Anti-irrigationists continued to prevent the collection of taxes until 1901.

The war prevented his return to Russia until 1917.

Low oil prices prevented a full recovery until the 1990s.

War time restrictions on paper use prevented a re-issue until 1946.

Even then production difficulties prevented its introduction into service until 1907.

In 1942 the series was ordered, but the war prevented delivery until 1948.

She lived until 1933, thus preventing much serious research until most of the evidence was long gone.

Work began in 1923, but financial difficulties prevented the completion of the building until 1932.

Drop pieces into cold water to prevent discoloration until ready to cook.