translation.en: Periodically, this drill, like a biopsy needle, plunges thousands of feet deep into the ice to extract a marrow of gases and isotopes for analysis.
translation.zh: 探索。 每隔一段时间这台钻机就像活检针检查一样 深入上千英尺的冰层中 抽取出气体的精华 和同位体以应用于分析。