But let's just count in terms of the numbers I'm touching 'cause that'll be useful in just a moment.
我明确地数了所动过的,数字,等会儿这个,可能有用。
So, if you can't immediately know, and you don't all have periodic tables in front of you, so that's fine, but if you have a periodic table in front of you, you need to be able to count valence electrons, so work on that if it doesn't come naturally to you in terms of figuring that out.
如果你不能马上想到,而且你手上没有周期表,那还好,但如果你面前有一张周期表,那你就得具备从中查出价电子个数的能力,如果你不能自然而然地想到,请在这方面多下点功夫。
But yet when you look back from the nineteenth century, these factors do count in explaining how countries turn out to be the way they are.
不过当你从十九世纪开始回顾历史,这些因素的确能解释,国家是如何转变成现在这样的
I've got to count my way down, which means that the access would be linear in the length of the list to find the i'th element of the list, and that's going to increase the complexity.
的位置并去访问,然后继续下去,也就意味着,找到数组中的第i个元素的方法,是关于数组的长度呈线性复杂度的,这回增加算法的复杂度。
Now I'm putting count in double quotes, not to make it a string, but to say, this is count generically. It could be counting one by one through the integers, it could also be taking a collection of data and going through them one by one. It could be doing counting in some other mechanism.
现在我把count用双引号标起来,不是说把它命名为一个字符串,而是说,这是一个通用的计数器,它可能是每一次减1的整数,也可能是拿一个集合的数据然后,一个一个的访问它们,也可能是以某种机制来计数。
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