Before the flight went down, sensors gave conflicting information on air speed to the plane's computers, possibly because of ice.

VOA: special.2009.06.13

So even though we see a nodal plane down the center, I just want to really point out that it's only when we have a nodal plane in the internuclear or the bond axis that we're calling that a pi orbital.

虽然在中间有个节面，我想要指出的是,只有节面在核间轴,或者键轴上时,我们才叫它π轨道。

麻省理工公开课 - 化学原理课程节选

So instead, these would be canceling out wave functions between the two, so we would end up with a nodal plane down the center.

相反，两者之间的,波函数会相互抵消，所以我们在中间会得到一个节面。

麻省理工公开课 - 化学原理课程节选

It began in April of nineteen ninety-four after a plane carrying the presidents of Rwanda and Burundi, both Hutus,was shot down.

VOA: special.2009.03.09

You go on an airplane and then after the usual delays, the plane begins to accelerate down the runway.

你坐上飞机,正常晚点之后,飞机就开始沿着跑道加速

耶鲁公开课 - 基础物理课程节选

"What do they fear? Someone bombing the plane or trying to down the plane in some other way?

VOA: standard.2009.03.23

Suppose I've got a heat-seeking missile which tracks down the plane.

假设有一个热追踪导弹,正在追踪一架飞机

耶鲁公开课 - 死亡课程节选

But many here remain deeply traumatized. Today marks the 15th anniversary of the day that former President Juvenal Habyarimana's plane was shot down.

VOA: standard.2009.04.08

That means, if you are going in a plane and you throw something up in the air, it seems to be going up and down to you.

也就是说,如果你在飞机中,你向空中扔出一物体,它也许会相对于你上下运动

耶鲁公开课 - 基础物理课程节选

He too parachuted from his aircraft. It was a U2 reconnaissance plane shot down by a Soviet missile of Sverdlovsk on May 1,1960.

VOA: standard.2010.05.07

In April,1994 unknown assassins shot down the plane carrying then-President Juvenal Habyarimana.

VOA: standard.2009.04.10

All the bodies have been recovered from the charred remains of the Air India plane that caught fire after it overshot the runway and plunged down a cliff Saturday in the southern Indian city of Mangalore.

VOA: standard.2010.05.23