Zuker and his colleagues posed a natural evolutionary question: Why would mammals have developed such an excellent carbon dioxide detector?

朱克和他的同事提出了一个自然演进的问题：为什么哺乳动物会衍变出这么优秀的二氧化碳探察功能呢？

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Weiss had to distill, heat and pass the air samples over adsorbents to remove gases such as carbon dioxide and krypton that could foul the extremely sensitive detector.

维斯必须蒸馏、加热并使空气样品通过吸附剂，以除去二氧化碳和氪等会污染极灵敏的探测器的气体。

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They turn into carbon dioxide generated by non-dispersive infrared detector, which were measured in water of the total carbon (TC) and inorganic carbon (IC).

其所生成的二氧化碳依次导入非分散红外检测器，从而分别测得水中的总碳(TC)和无机碳(IC)。

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