在解说的时候，讲话者是告诉一个不在现场的人那里发生了什么。
In the case of a commentary, the speaker tells somebody else who is not present at the scene what is going on.
在一个会议或大会上，推特信息可以覆盖到前排的人、后排的人，甚至是不在现场的人。
In a meeting or conference, tweets can reach the people in the front of the room, the back of the room and people who are not even in the room.
它表明这种技术将一个不在现场的人的年龄划归到某一组别中具有高度准确性，每个组别的年龄段跨度为20岁。
It suggests the tool would be highly accurate in assigning unidentified persons into generational categories, each spanning 20 years.
它表明这种技术将一个不在现场的人的年龄划归到某一组别中具有高度准确性，每个组别的年龄段跨度为20岁。
It suggests the tool would be highly accurate in assigning unidentified persons into generational categories, each spanning 20 years.
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