Passengers often pay no attention to those safety directions before a flight.

VOA: special.2009.01.30

Then it lands on your foot, because assuming the cannon is at zero height, the cannonball certainly comes out towards the enemy, but has no time of flight.

然后它就会落在你的脚边,因为假设大炮的高度为 0,炮弹笔直地出膛打向敌人,却没有时间飞行

耶鲁公开课 - 基础物理课程节选

Flight controllers could no longer hear Glenn.

VOA: special.2009.06.17

India's Civil Aviation Minister has said the weather and visibility were good, and there were no apparent signs of trouble when the flight landed.

VOA: standard.2010.05.23

Also,the effectiveness of such watch lists is being called into question, as the man charged with trying to bring down flight 253 on Christmas Day was not on the U.S.'no fly' list.

VOA: standard.2009.12.28