give off heat and light 发出热和光
On day four, The heavenly bodies that give off light by day or night are created.
在第四天,那些在白天或者晚上发光的天体被创造了。
Think about a light bulb; if you apply a current, the filament gets hot and begins to give off light of different colors - red then yellow then blue.
试想下灯泡,如果接通了电流,灯丝会变热继而发出不同颜色的光-从红到黄再到蓝色。
They're some type of granite formations that give off light at night. Prof. Glom has named them skyscrapers since they seem to be scraping the skies.
它们是某种夜间会发光的花岗岩结构。格洛姆教授把它们叫做摩天大楼,因为它们好像已经擦到了天。
They were not hot enough -- like stars-- to give off light.
VOA: special.2009.04.29
On day four, The heavenly bodies that give off light by day or night are created.
在第四天,那些在白天或者晚上发光的天体被创造了。
That makes sense because we're losing energy, we're going to a level lower level, so we can give off that extra in the form of light. And we can actually write the equation for what we would expect the energy for the light to be.
这很合理,因为我们在损失能量,我们要到一个更低的能级去,我们要以光的形式给出额外的能量,我们可以写下光能量的方程。
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