然而，这只是一个选择问题；我们可以使用交互作用或者状态机。

However, this was simply a matter of choice; we could have used an interaction or state machine.

youdao

每一项被提供的操作都能够拥有一个方法行为：活动、交互作用、状态机、或者不透明行为(代码)。

Each provided operation can have a method behavior that is an activity, interaction, state machine, or opaque behavior (code).

youdao

我们的全部示例代码都是用于演示pricechecker和一个假定客户机的交互作用。

All of our example code illustrates interaction between PriceChecker and a hypothetical client.

youdao