开开声
"Open up!"
以上为机器翻译结果，长、整句建议使用 人工翻译 。
平时，刚开始上课的时候，在街上就能听到课桌开开关关的乒乓声和孩子们一遍遍高声念课文的读书声。
Usually at the beginning of school, the noise of desks being opened and closed, and lessons repeated at the top of the children "s voices could be heard out in the street."
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