我们的类将需要定义一个标识符，以将acmemembership类从众多的类中区分开来。
Our class will need to define an identifier to distinguish one instance of our AcmeMembership class from another.
供应链管理正是为迎合这一需要而从众多的管理领域中脱颖而出的。
To meet the need, Supply chain management emerged from all fields of management theory.
他们必须在消费者的口味众多，并且可以广泛选择多种媒体的时代——从众多的有线频道到互联网，来迎合不同观众的需要。
And they must do all this in an era when a wide variety of media sources - from the plethora of cable channels to the Internet - have sprung up to cater to different consumer tastes.
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