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The interface of the water and air could be seen under normal or rectified vision when air bubble passing.
当有气泡通过时,用正常或矫正视力可以发现水和空气的分界面。
youdao
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The interface of the water and air could be seen under normal or rectified vision when air bubble passing.
当有气泡通过时,用正常或矫正视力可以发现水和空气的分界面。
youdao