And then notice the structure, WHILE I got a keyword WHILE, there's that color identifying it, and in parentheses I have a test.
然后注意这个结构,有一个关键词,颜色就可以区分出它了,然后括号内是个测试。
You might recall from grade school sometimes you put things in parentheses so that your addition happens first, then your multiplication, otherwise multiplication would happen by default first.
你们可能会想起小学时,将一些加法表达式,放在圆括号里,这样加法可以先计算,然后是乘法,否则,乘法默认先发生。
And when we describe this in terms of talking about chemistry terminology, we would call the first one the 1 s, and 1 is in parentheses because we're talking about the first electron there, and we would multiply it by the wave function for the second one, which is also 1 s, but now we are talking about that second electron.
当我们用化学术语来,描述它的时候,我们称第一个为“1s“,括号中的1是因为我们,在谈论第一个电子,而且我们会用它的波函数,乘以第二个,第二个也是“1s“,但是我们现在谈论的是,第二个电子。
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