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单词 drilling core
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原声例句
PBS趣味科普

Much easier than drilling a deep ice core which is 3,000 meters and costs 50 million dollars.

比钻探 3000 米深、成本 5000 万美元的冰芯容易得多。

PBS访谈环境系列

Last season, they went much deeper, drilling out this long ice core a few miles away. It is nature's ancient history book for this glacier.

上个季节,他们走得更深,在几英里外钻出了这个长长的冰芯。这是自然界关于这条冰川的古老历史书。

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