When oceanographers study these samples, they can see changes in the carbon cycle during the PETM.
当海洋学家研究这些样本时，他们可以看到在古新世-始新世极热时期碳循环的改变。
During the PETM, for reasons that are still unknown, the amount of carbon in Earth's atmosphere rose rapidly.
由于种种原因，在古新世-始新世极热时期地球大气中碳上升的量。
The conclusion, Dickens said, is that something other than carbon dioxide caused much of the heating during the PETM.
Dickens说，结论是：导致古新世-始新世极热时期气候变暖的主要原因不是二氧化碳，而是另有其物。
The ternary-monomer graft copolymers of polyethylene(PETM) was synthesized by the monomer self-dissolved in-situ solid phase graft copolymerization.
采用单体自增溶原位固相接枝法合成了聚乙烯与三单体固相接枝物（PETM）。
According to the analysis, PETM event caused seawater temperature rising and environment change during a short time, larger benthic foraminifera cannot fit for it and begin to extinct.
据分析，PETM事件的发生造成海水温度的快速上升，底栖大有孔虫不能适应新的环境，从而发生灭绝。
Currano and her colleagues think these more voracious insect appetites were a result of a concurrent rise in carbon dioxide levels during the PETM that would have made plant leaves less nutritious.
柯拉诺及同事认为，在始新世极热时期(PETM)与气温同时上升的二氧化碳含量使得植物树叶含有的营养成分下降，昆虫需要食用更多的树叶才能饱腹。
Currano and her colleagues think these more voracious insect appetites were a result of a concurrent rise in carbon dioxide levels during the PETM that would have made plant leaves less nutritious.
柯拉诺及同事认为，在始新世极热时期(PETM)与气温同时上升的二氧化碳含量使得植物树叶含有的营养成分下降，昆虫需要食用更多的树叶才能饱腹。
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