They found exactly that: in eight of the study lakes, the amount of inorganic sulfur in the sediments had increased steadily since 1980.

他们恰恰发现：在受研究的8个湖泊中，沉积物中无机硫量自1980年以来稳步增长。

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They found exactly that: in eight of the study lakes, the amount of inorganic sulfur in the sediments had increased steadily since 1980.

他们恰恰发现：在受研究的8个湖泊中，沉积物中无机硫量自1980年以来稳步增长。

youdao