It was a scientist called Charles Keeling who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.

是一位名叫查尔斯·奎林的科学家把1957至1997年期间大气层中二氧化碳的含量作了精确的统计。

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It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.

是一位名叫查尔斯㧰·基林的科学家曾经把1957 - 1997年期间大气层中二氧化碳的含量作了精确的统计。

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The long-term measurements at Mauna Loa were started by a Scripps Institution of Oceanography scientist called Charles Keeling.

BBC: Carbon dioxide passes symbolic mark