After about an hour of being beyond the pull of Earth's gravity, Glenn reported he felt fine.

VOA: special.2009.06.17

Worse still,after about 20 minutes after the ship takes off, all radio contact between ship and earth will be destroyed.

更坏的是，当飞船起飞20分钟后，所有飞船与地球的无线电通讯都被切断。

耶鲁公开课 - 死亡课程节选

The poet, after all, is subject to gravity in Frost, to the force of the earth.

这个诗人，弗罗斯特，终究还是受制于地心引力，受制于地球的力量。

耶鲁公开课 - 现代诗歌课程节选

It happened a few minutes after the three astronauts completed a television broadcast to Earth.

VOA: special.2009.07.22

After they land,meteorites can pick up small organisms and chemicals from Earth's environment.

VOA: special.2011.06.22

Food was also on the mind of astronaut Nicole Stott, who is returning to Earth after living on the space station for the last three months.

VOA: standard.2009.11.30