单词学习：reverberation 名词
reverberation
/rɪˌvɜːrbəˈreɪʃn/
回响，回声；反响，深远影响
The reverberation of the school bell could be heard throughout the entire campus, reminding students that Teacher Gu's class was about to begin.
校园里回荡着上课铃声，提醒学生们顾老师的课即将开始。
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