最后，描述了单体模式在系统中的应用。

Finally, the application of singleton pattern is depicted in this system.

youdao

我们实际上并不需要更多的实例，所以单体模式也不错。

We don't really need more than one instance here, so a singleton is fine.

youdao

Clancy回答，目前协议还没有考虑机构购买单体图书，注册登记制度的出现使我们可以考虑新的模式。

“Right now, the agreement does not consider institutional purchase” of individual books, Clancy acknowledged. “The creation of the registry allows us to consider new models.”

youdao