全球77%的能量产生自化石燃料。
On a global scale, 77% of energy is created from fossil fuels.
系统产生的能量足以给几千户人家供暖。
The system produced enough energy to heat several thousand homes.
No, OK and that's correct, because each photon of light actually has more energy than is needed to eject an electron.
没有,好,对了,因为每一个光子实际上,都有更多的能量去逐出一个电子。
Let's look at the energetics of one of those electrons crashing into a hydrogen atom inside the gas tube.
我们一起来考察一下,其中的一个电子的能量,在阴极射线管中,撞击到氢原子上。
There's a sense of aliveness and energy, and in scientific terms everything is pure energy, so it's not that far-fetched.
有一种生机和能量,用科学的话来说,万物都是纯粹的能量,因此上面说法也不为过。
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