Because a FunctionCall class can contain more than one custom function, you should define a unique identification number for each custom function.
因为functioncall类可以包含一个以上的定制函数，所以应当为每个定制函数定义惟一的识别号。
2
What they all really want is entree into the middle class, which is why these movies can set them up as objects of audience sympathy and identification.
他们所有人都想的是进入中产阶层，这就是电影中他们被观众同情和认可的原因。
3
It illustrates the concept and identification of virtual channel, the mapping relation between virtual channel and traffic class and virtual channel arbitration.