第一个表达式必须为串联的行值。

The first expression must be the row value that must be concatenated

youdao

对于计数器，为3行历史数据中最后一行和第一行值的差。

For a counter, the difference in the value between the last and the first history row of the 3 rows.

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然后这个hash值被映射到一个桶中存储，或者获得一个行值。

This hash value is then mapped to a bucket for storage or for getting a value of the row.

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I don't have to go read what it printed out in the screen. This has returned a value that I can use. Because I could do a test to say, is this a return value? If it's not, I'll do something else with it. So the binding is still there, it simply doesn't print it out.

我不想读到屏幕中打印出来的这行字,程序返回过一个我能够使用的值,因为我可以做个小测试，来说明这是否是返回的值，如果不是，我可以做一些其它的事,而这个绑定依然在这儿，没有打印任何东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, after the second line for code here char * s1 gets the return value of get string this is what the state of our world looks like.

在第二行之后,这个代码char，*s1，等于GetSting的返回值,这就是它看起来的状态。

哈佛公开课 - 计算机科学课程节选

Specify the quantum number n and divide by Z.

只需说明n的具体值，并用Z去除就行了。

麻省理工公开课 - 固态化学导论课程节选