Meanwhile, the nodes attribute specifies a query expression that can result in any number (including zero) of nodes.

同时，节点属性指定可以产生任何数量（包括零）节点的查询表达式。

youdao

Ensures that all functions in an expression have the correct number of arguments.

确保表达式中所有函数的自变量数量正确。

youdao

It's not just a number, it's any expression.

这可以不是一个数字，可以是任意表达式。

youdao

I just want to remind you, if I wanted to, for example, type in an expression like that, notice the syntactical form, it's an expression, a number, followed by an operand, followed by another expression.

我想要提醒下大家，如果你想要，例如，输入一个这样的表达式，注意语法形式，这是个表达式，一个数字，后面是一个运算对象，后面是另外一个表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选

I know you'd like to give me other things, other expression, somebody give me a number.

表达式什么的，谁给我一个数字？,没有么？谢谢！很不错的数字。

麻省理工公开课 - 计算机科学及编程导论课程节选

The answer was, find a mathematical expression depending on the number of inputs.

很不错，答案是，找到一个通过输入数字,计算出来的数字表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选

And maybe most importantly, as the son of a Polish immigrant, a man of deep and devout faith, Jack knows that every number on a page, every dollar we budget, every decision we make has to be an expression of who we wish to be as a nation, our values.

WHITEHOUSE: President Obama Nominates Jack Lew for Secretary of the Treasury | The White House