Once the clay dries, the glassmaker dips the form in a container of hot liquid glass until it is covered.

VOA: special.2009.09.16

Once they pass the exams, they can leave high school as early as the end of the second year.

VOA: special.2010.02.25

Once the solid glass object cools, an artist uses special tools to carve an opening in the container.

VOA: special.2009.09.16

He said once the people understood that it was a war for democracy, they would win it quickly.

VOA: special.2009.11.12

Once the boot forms dried, he added clay details to the shoes to represent leather shoe material.

VOA: special.2009.09.09

Once the money is printed, guillotine cutters separate the sheets into two notes, then into individual notes.

VOA: special.2010.11.15

Once the flight landed in New York he deployed the emergency slide and left the plane.

VOA: special.2010.08.13

But once the seeds are planted, she does suggest covering the soil with a little mulch to protect it during rains and dry periods.

VOA: special.2010.03.02

Once the shuttle is retired this year, the only way for the United States to get astronauts into orbit will be on Russian Soyuz rockets.

VOA: special.2010.04.28

Later,once the plane left the gate, it was ordered to return for further investigation.

VOA: special.2010.05.08

The former quarterback for the Atlanta Falcons was once the league's highest paid player.

VOA: special.2009.08.01

Cover the items in plastic once they reach the right "critical temperature" for storage.

VOA: special.2009.11.30

Once the glass form cools completely, it is taken off the metal stick.

VOA: special.2009.09.16

Once the real flight began, the pilot had to remember everything he learned.

VOA: special.2010.07.07