Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.

VOA: special.2009.02.09

My body is constantly changing because the relationships between my arms and my head and so forth. My muscles are moving.

我的身体在不断改变,因为我的胳膊和脑袋的关系等等,我的肌肉在动。

耶鲁公开课 - 死亡课程节选

but you can sort of tell that the particle is moving slowly or rapidly by looking at the space in between these tick marks.

但你可以通过观察计时点之间的距离,来判断该物体运动的快慢

耶鲁公开课 - 基础物理课程节选

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

Then this moving this around here, and it will give us a sense of the difference in style between pop music and classical music.

两种音乐重叠回旋着,这让我们一下子感受到了,音乐中古典与流行的反差

耶鲁公开课 - 聆听音乐课程节选

Early relations between the Indians and the settlers moving West were mostly peaceful.

VOA: special.2009.03.30

Here's a group of sounds, different pitches and actually three different pitches in there, as opposed to just one pitch--one pitch, three pitches or three or four pitches, moving in different ways, kind of independent rhythmic chords, so that's the difference between monophonic, homophonic and polyphonic texture.

这是一组音,不同的音高,事实上三个不同的音高,相对于一个音高,一个音高,三个音高或四个音高,以不同方式运动,像有独立节奏的和弦,这就是单音,主音和复音织体的区别

耶鲁公开课 - 聆听音乐课程节选

Rwanda continues to struggle to find a balance between remembering the past and moving to the future.

VOA: standard.2009.04.10