当一个洞形成的时候，平衡内外气压的强烈趋势会生成一个通风的隧道，就像水流过管子一样。
When a hole forms, a strong tendency to equalize creates a rushing tunnel of wind, like water flowing through a hose.
当一个洞形成的时候，平衡内外气压的强烈趋势会生成一个通风的隧道，就像水流过管子一样。
When a hole forms, a strong tendency to equalize creates a rushing tunnel of wind, like water flowing through a hose.
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