说明：  顺序对话的计时器。 它创建一个实时条形图，每个演示者一个条形图。 每个小节都由一个谈话部分和一个问答部分组成。 条变得更小以显示剩余时间。 该示例适用于10位发言人，4分钟的演讲，1分钟的问答。
(Timer for sequential conversations. It creates a real-time bar chart, one for each presenter. Each section consists of a conversation section and a question and answer section. Bars become smaller to show the remaining time. The example is for 10 speakers, 4 minutes of speech, 1 minute of Q & A.)