鹦鹉模仿人说话的声音。
上午，谭宇正在看电视，屋外传来一些人说话的声音，谭宇连忙关上电视，迎了出去。
In the morning, Tan Yu was watching TV when he heard people talking outside. He hastened to turn off the TV and went out to greet them.
听众必须听到声音才能明白说话人的意思。
The listener must hear the sounds to figure out what the speaker means.
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