A transition is only performed when its associated condition is true.
转移只在其相关联的条件为真时才执行。
You can also associate a condition (known as a guard) with the transition.
您还可以将一个条件（称为监护）与转换关联在一起。
As you might have guessed, you also must set a condition for the other transition.
正如您所猜想的，您还必须设置其他迁移的条件。
When the condition evaluates to true, the transition will occur.
当条件计算为true，将出现转换。
When the condition evaluates to true, the transition will occur.
当条件计算为true，将出现转换。
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