producta造句

• Then, the client could simply refer to the abstract product, rather than producta or productc
  然后，客户机可以只引用抽象产品，而不必引用producta或productc。
• For example, the client could simply call the following to create an instance of a producta class
  例如，客户机只需要调用以下代码，就可以创建producta类的实例。
• The client uses the different methods in the factory class to create instances of producta and productb
  客户机使用工厂类中的不同方法来创建producta和productb的实例。