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