necessary operation

• 必要的动作,必要动作

necessary operation的用法和样例：

例句

1. A symbol that represents the action to be performed in a mathematical operation.
   表示数字运算中所要执行的动作的符号。
2. Through your presentation and construction of the routine, you should create the necessary misdirection that makes any move seem invisible.
   在你表演与建立流程的过程中，你应该制造必要的误导以使任何的动作隐形。