我們能夠向你確實情況是那個人有看著屏幕上的信息,但是無法知道那人有沒有逐個詞去讀該信息.Referring back to the example in the previous paragraph,you could check to see who has checked their e-mail before the meeting and then telephone those who have not read it.回到上一段落的例子，你可以查看誰在開會前讀了電郵并打電話給那些未讀電郵的人。