It needed much more power than the rockets used to launch the one-man Mercury and the two-man Gemini flights.

VOA: special.2009.07.08

And during the siege there were sixty-five balloon flights carrying two and a half million letters, weighing a grand total of 10,000 kilograms, so roughly about 20,000 pounds.

在巴黎被围期间,共放出了六十五个热气球,带走了多达两百五十万封信,合计重量约有一万公斤,也就是两万磅左右

耶鲁公开课 - 1871年后的法国课程节选

More expensive than low cost flights,

比低价飞机票贵，

介绍欧洲之星 - SpeakingMax英语口语达人

Join us again next week as we continue the story of the Apollo space flights on EXPLORATIONS in VOA Special English.

VOA: special.2009.07.08

But Americans were hopeful. If the plan succeeded, it would be the greatest space act since manned flights began.

VOA: special.2009.06.24

But they were not the last. NASA -- the National Aeronautics and Space Administration launched six more Apollo flights.

VOA: special.2009.07.29

The results of the two short flights made space officials believe the Mercury program was ready for its first orbital flight.

VOA: special.2009.06.17

Its Titan rocket could lift three times as much weight into space as the Atlas rocket used for the Mercury flights.

VOA: special.2009.06.24

Today look back at the first flights of the Apollo program designed to land humans on the moon.

VOA: special.2009.07.08

It was the last of one hundred thirty five flights for the world's first reusable space vehicle design.

VOA: special.2011.07.27

Russian,European and Japanese cargo spacecraft will continue their resupply and waste disposal flights to the orbiting laboratory.

VOA: special.2011.07.18

He was a test pilot. He had flown earlier on one of the two-man Gemini space flights.

VOA: special.2009.07.15

But after more than one hundred thirty flights, the space shuttles are being retired this year.

VOA: special.2010.04.28

Much of what was learned from its flights speeded up the development of the space program.

VOA: special.2010.07.07

Astronauts in NASA's Mercury Program flew the first American space flights in the early nineteen-sixties.

VOA: special.2011.04.06

About one thousand two hundred flights were cancelled at New York City's three major airports.

VOA: special.2010.01.05

And they increased the interest of scientists in the next Apollo flights to the moon.

VOA: special.2009.07.29

These smaller carriers now operate about half the airline flights within the United States.

VOA: special.2009.06.13

Apollo flights Five and Six tested the moon-landing module and the Saturn Five rocket.

VOA: special.2009.07.08

In the last years of the nineteen twenties, hundreds of record flights were made.

VOA: special.2010.05.26

Scientists strongly believe that finding such substances will be goals of future space flights.

VOA: special.2010.05.25

Passengers will be required to have three days of training before the flights.

VOA: special.2009.12.18

It placed orders for four different kinds of military rockets for Mercury flights.

VOA: special.2009.06.10

They wanted a plane that could test conditions for future flights into space.

VOA: special.2010.07.07

The scientists kept detailed records of the birdstravel over a number of flights.

VOA: special.2010.03.02

Today we tell about the flights that followed Apollo Eleven to the moon.

VOA: special.2009.07.29

Hundreds of flights were cancelled, most of them at the Frankfurt airport.

VOA: special.2011.01.11

But it could launch Apollo spacecraft on test flights around the Earth.

VOA: special.2009.07.08

Since nineteen eighty, flights have increased by about two percent each year.

VOA: special.2009.04.01

It was designed to test equipment and conditions for future space flights.

VOA: special.2010.07.07