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1·And so the energy is zero because the electron is no longer bound. It is free.

所以这个系统能量为0，因为，电子不再受束缚了，它自由了。

2·If the total energy were positive, then for this to be positive, a That's physical nonsense, of course, so this only holds for bound orbits.

如果总能量为正，这也是正的，要是负的。，a, has, to, be, negative。，这都是物理的废话，也只是用于，规则轨道。

3·And how about potential energy? It is not bound.

那么什么是势能，答案不是一定的。

4·According to their estimates, this should require no more energy than a typical Earth-bound power station can provide.

据他们估计，使用大约地球上现有的所有发电站就可为其提供能量。

5·It has become even more crucial as a potential transit route for Europe-bound natural gas from energy-rich Azerbaijan and Central Asia, as well as from Iraq (and eventually Iran).

土耳其可能会承担起输气任务，从能源丰富的阿塞拜疆，中亚，以及伊拉克(最远可至伊朗)将天然气输入欧洲，这使得它的地位更加重要。

6·If the total energy is positive, the orbit is not bound.

如果总能量为正，轨道就不规则了。

7·Rather, in the beginning artists, philosophers, linguists, writers and musicians were bound up in a movement of great force that sought to break with the past, and which did so with great energy.

然而，初期的艺术家、哲学家、语言学家、作家和音乐学家花了极大的气力忙于和过去断绝关系。

8·Food sourced locally is generally fresher than food brought in from far away, and the energy costs and related environmental impact of getting it to market is just bound to be lower in most cases.

当地生产的食品相比较于外地产的要更加新鲜；通常，当地产的食品免去了运输，降低了能耗，更为环保。

9·So we can think about what is our most loosely-bound electron, what's that highest energy orbital, and it's going to be the 2 p orbital, that's going to be what's highest in energy.

我们来想一想,它“束缚得最松“的电子是哪一个，能量最高的轨道是哪一个？,它就是，2，p，轨道，是能量最高的轨道。

10·We have defined potential energy 0 to be zero at infinity, and that is why all bound orbits have negative total energy.

我们规定，无限大时,势能为，这就是为什么所有的,规则轨道总能量为负。