The operator USES rule files containing regular expression rules to extract concepts from text columns.

这个操作器使用包含正则表达式规则的规则文件从文本列中提取出概念。

youdao

Right-click the first output port (Output) of the Regular Expression Lookup operator and select Create suitable table from the context menu.

右键单击 Regular Expression Lookup 操作器的第一个输出端口 (Output)，从上下文菜单中选择 Create suitable table。

youdao

The * operator matches the previous expression 0 or more times.

操作符 * 匹配之前的表达式零次或零次以上。

youdao

Turns out with a Boolean expression, you don't have use the equality operator equals equals, you can just say what you mean.

结果用一个bool表达式，你不需要使用等号操作符“==“了，你只要说出你的意思。

哈佛公开课 - 计算机科学课程节选

And in Python the expression is, operand, operator, operand, when we're doing simple expressions like this, and if I give it to the interpreter, it gives me back exactly what you'd expect, which is that value. OK?

在Python中表达式就是，运算对象，操作符，运算对象，当我们处理这样的简单表达式的时候，我把表达式传给处理器，处理器给我返回了我想要的结果，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

Now Josh, the I'm-going-to-be-a-reporter-someday crew member, and Michael, the I-really-want-to-be-a-rock-star prompter operator, were around me, wearing the same expression you'd have after witnessing a car wreck.

CNN: Robin Meade talks anxiety and her road to self-confidence