By contrast, the Japanese in the Pacific theatre, faced with overwhelming American artillery and airpower, heavily fortified many of their islands with chains of deeply dug caves and bunkers.
相反的是，太平洋战场上的日军面对美军占绝对优势的火炮和空优，利用挖掘链式深坑极大地强化了许多岛屿的防御力。
Eruptions have rifted continents, raised mountain chains, constructed islands and shaped the topography of the earth.
火山喷发撕裂了大陆，形成了山脉，造就了岛屿，塑造了地球的地形特征。
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