如果一个度量引用其他度量，那么在为它产生SQL表达式时，不能使用聚合函数来为嵌套的度量产生SQL表达式。

When generating SQL expressions for measures that reference other measures, the aggregation function might not be used to form the SQL expression for the nested measures.

youdao

这个功能的局限是，只能使用它探测函数，而不能探测应用程序的功能性片段。

The limit of this functionality is that it can only be used for probing functions, rather than functional fragments, of an application.

youdao

其他任何空间函数都不能使用网格索引。

None of the other spatial functions can exploit a grid index.

youdao

So even though increment is obviously increment declared and defined in this function, it's later; so it's too late for me to use it in main.

很明显，即使在这个函数中,已经声明和定义;,也太迟了，以至于，我在main函数中不能使用它。

哈佛公开课 - 计算机科学课程节选

Well, simply with the * notation at least on the way in when you declare the function called swap, you simply say this is not going to take an int and another int because that's useless.

好的，简单说，当你声明一个函数调用swap函数时,使用*符号，你可以简单说，这不能使用一个int数和另外一个int数,因为那是无效的。

哈佛公开课 - 计算机科学课程节选