Ask those interested to press down on the surface of the water with their hands, to see how the level of the water rises and then falls when they press down or let up.
问到有兴趣的手按压其表面的水,看看如何在水平提高的水,然后按下时跌倒或松懈。
Mist can take you on a boat ride up and down the river so you can see the animals as they come to drink or play in the water.
VOA: special.2009.08.19
Just like we see destructive interference with water waves or with light waves, we can also see destructive interference with orbitals.
就像我们看到水波,和光波的相消干涉,我们也可以看到轨道的相消干涉。
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