The most severe tornadoes can reach wind speeds of three hundred twenty kilometers an hour or more.

VOA: special.2010.05.11

They were designed to fly at speeds up to six thousand four hundred kilometers an hour.

VOA: special.2010.07.07

The F.C.C.wants one hundred million homes to have inexpensive Internet service at ten times current speeds.

VOA: special.2010.03.19

This is because orbital debris travels at speeds of thirty-two thousand kilometers an hour or more.

VOA: special.2009.04.01

There was a new system of liquid nitrogen to keep the pilot cool and to resist the crushing force of gravity at high speeds.

VOA: special.2010.07.07

He discovered that galaxies are moving away from Earth at speeds between three hundred kilometers a second and one thousand eight hundred kilometers a second.

VOA: special.2009.04.29

With specially cooled tracks and racing equipment, it is not unusual for luge athletes to reach speeds of one hundred forty kilometers an hour or more.

VOA: special.2010.02.10

The Roadster can reach speeds up to about two hundred kilometers an hour.

VOA: special.2010.11.17

It would reach hypersonic speeds -- five times the speed of sound.

VOA: special.2010.07.07

Wind speeds of up to one hundred sixty kilometers an hour.

VOA: special.2010.06.30

Opposition activists complain that internet speeds were brought to dismally slow levels and that they were forced to use proxies to prevent their IP addresses from being detected.

VOA: standard.2009.11.14

Internet connection speeds in Iran are also reported to be extremely slow, amid word the government is again trying to hamper communications between Iranians and the outside world.

VOA: standard.2009.12.07

China is also catching up. Meanwhile in the U.S., the fastest train,known as Acela, reaches less than half those speeds and only operates between Washington, New York and Boston.

VOA: standard.2010.02.15

Dr.Craig Smith,the chief executive of Electro Optic Systems, says laser beams fired from the ground could protect astronauts and satellites by targeting space junk that travels at potentially devastating speeds.

VOA: standard.2010.07.24