They can, though, store only a fraction of the amount of energy which a battery stuffs away. They therefore soon run out of puff.

不过，它们能够储存的能量只有电池的一小部分，过不了多久便会气喘吁吁。

I think I have no hope off the line and I think the 1st 50meters I'm gonna be screwed, but I think you're gonna run out of puff and I think it's gonna be pretty close at the end of that quarter.

我觉得我在起跑时没有希望，而且我认为前50米我会很吃亏，但我想你会喘不过气来，我想在终点处会非常接近。