tuples and consume() generates code that acts on the tuples once they are produced. Usually the parent operator calls produce() on its child and the child calls consume() on its parent once it generated the producing code. Note that produce()/consume() do not exist in the generated code but only during the code-generating phase. Let’s look at
Protesters take to the streets of Tehran on Friday night
，这一点在快连下载安装中也有详细论述
ITmedia�̓A�C�e�B���f�B�A�������Ђ̓o�^���W�ł��B
突出“两个联系” 发挥代表作用