They are so curious about how the sounds are produced that they listen attentively to the explanation from the teachers.
他们很好奇声音是如何产生的，因此他们聚精会神地听老师解释。
They are so curious about how the sounds are produced that they listen attentively to the explanation from the teachers.
他们很好奇声音是如何产生的，因此他们聚精会神地听老师解释。
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