题目

请英语高人帮我翻译一段英文
States are rounded rectangles. Transitions are arrows from one state to another. Events or conditions that trigger transitions are written beside the arrows. Our diagram has two self-transition, one on Getting SSN and another on Getting PIN.
The initial state (black circle) is a dummy to start the action. Final states are also dummy states that terminate the action.
The action that occurs as a result of an event or condition is expressed in the form /action. While in its Validating state, the object does not wait for an outside event to trigger a transition. Instead, it performs an activity. The result of that activity determines its subsequent state.
Activity diagrams
An activity diagram is essentially a fancy flowchart. Activity diagrams and statechart diagrams are related. While a statechart diagram focuses attention on an object undergoing a process (or on a process as an object), an activity diagram focuses on the flow of activities involved in a

提问时间：2020-12-25

答案

状态是用圆角矩形来表示的.转移则是使用带箭头的连线表示.触发转移的事件或者条件写在箭头的旁边.我们的图上有两个自转移.一个是在Getting SSN,另一个则在上Getting PIN.初始状态（黑色圆圈）是开始动作的虚拟开始....