In figure 1, you will find a column displaying a solid circle, a half-solid circle, and an empty circle for each received message.

在图1中，您将发现其中一列对于接收的每条消息显示实心圆圈、半实心圆圈或空心圆圈。

youdao

In figure 1, you will find a column displaying a solid circle, a half-solid circle, and an empty circle for each received message.

在图1中，您将发现其中一列对于接收的每条消息显示实心圆圈、半实心圆圈或空心圆圈。

youdao