注意只有全局导出的符号定义才是正式过程描述符。

Notice that the only symbol definition that is exported globally is the official procedure descriptor.

youdao

当视窗初次开启时，它会显示上次选取的符号定义。

When the window first opens, it displays the definition for the last symbol selected.

youdao

相反，使用 + 或 * 等符号定义可以执行普通数字加减法的函数。

Instead symbols like + or * are used to define functions that can do things like normal numerical addition and subtraction.

youdao

So compare the definition of words with what's written here in the nerdy notation on the board.

不妨去对比一下这个定义的,文字表述与黑板上的符号表述

耶鲁公开课 - 博弈论课程节选

But let me write that definition again, using or making use of the notation from the class.

但是现在我们用这些符号来,重新作一下优势策略的定义

耶鲁公开课 - 博弈论课程节选

But the take away for now is that if you don't clue -lcs50, -- you get some mention -- some error message -- about "undefined symbol," and that should be your clue that, "Oh it's undefined in that I haven't told the compiler that I want to link in these zeros and ones."

但现在如果你删除“-lcs50“,你们会得到一些提示--一些错误信息-,像“未定义的符号“，这可以为你提过线索，“这个没有被定义，我没有告诉编译器,把想把这个与“1“和“0“建立连接，“

哈佛公开课 - 计算机科学课程节选