Now, rather than go through this again and again, because frankly you can probably see where this goes before long we're gonna hit some problems.
现在,不是一次又一次做这些了,坦白说,你也许可以看到,我们马上要遇到一些问题。
And if you hit it really hard and a long way, it goes over the boundary.
还有就是,如果你真的击得很重,打得很远,过界了。
No, instead we have to click other amount at bottom right there, when we have to input 4-0-0 in this screen 4-0-0 after consulting visually the little cheat sheet on the device itself it tells you in a very long chart how much one pass costs so we multiply and type in 4-0-0, we hit enter.
不,然而我们必须点击,右下边的这个,当我们需要在这个屏幕上,输入0,通过咨询那个设备上小说明,它在一个很长的图表上,告诉你,每一站需要多少钱,我们加起来,输入了4-0-0,点击输入。
Because in doing that, Python would then have a value that it could pass on into some other part of a computation, and if it wasn't what I wanted, I might be a long ways downstream in the computation before I actually hit some result that makes no sense.
因为如果这样做的话,Python会将,输入的值传递到下面的,一些运算中去,如果这个值的类型不是我想要的,我可能会在得到,一个毫无意义的结果之前,经历一个很长时间的,计算过程。
Conversely, if you get an answer and it doesn't seem to make sense, then you've got to go back and ask, am I violating some of the assumptions, and here you will find the assumption that the particle had that acceleration a is true as long it's freely falling under gravity but not when you hit the ground.
反过来说,如果你得到一个结果,发现似乎是错的,那么你就应该回过头来问问自己,我是不是违反某些前提了,这个模型中,你就发现,只要质点在重力作用下自由下落,质点具有加速度a的前提是正确的,但是落地后就不成立了
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