Doctors Stevenson is analyzing one element—carbon-14 in ring from both living and dead trees.
史蒂文森博士正在分析一种元素——活树和死树年轮中的碳-14。
Dead, sinking phytoplankton cells are the primary means of removing carbon from the ocean's euphotic zone near the surface.
死去的下沉浮游植物细胞的主要作用是吸收接近海洋表面透光层中的碳。
Dead, sinking phytoplankton cells are the primary means of removing carbon from the ocean s euphotic zone near the surface.
死去的下沉浮游植物细胞的主要作用是吸收接近海洋表面透光层中的碳。
By the same token, removing a completely burned forest can end up releasing more carbon than if the dead trees are left alone.
同样道理，把烧毁的森林运走的结果也是产生更多的碳，比把死掉的树留在那更多。
Marine biologists report that dead bodies of the marine organism Pyrosoma atlanticum may be transporting much more carbon to the seafloor than phytoplankton or other jellyfish-like creatures.
据海洋生物学家报道，一种学名叫做燐火体虫（Pyrosoma atlanticum）的海洋生物死亡后，随其尸体沉入海底中的碳要多于浮游植物或其他水母类生物。
Hitherto it was assumed that the main way carbon gets from the top to the bottom of the ocean was as part of dead planktonic algae sinking to the seabed.
在此之前，人们一直认为碳从海面转移到海底的主要途径是伴随着浮游藻类死亡后而沉没海底。
Certainly, any national energy policy that's built on cap and trade or a carbon tax or any other mechanism for fighting global climate change is now dead.
现在，所有以碳排量限制与交易法案或是碳排放税以及其他抗击全球气候变化机制为基础的国家能源政策肯定全都泡了汤。
About 90 percent of the world's total carbon content has settled to the bottom of the ocean, primarily in the form of dead biomass.
全世界的碳有90％沉积在海底，主要都是通过这种方式进行的。
Dead cells and carbon dioxide causes the PH level of your skin tissue to rise.
死亡细胞和二氧化碳会使你皮肤组织的PH值(酸碱度)升高。
More and more Carbon dioxide, and acid rain comes along, get more trees dead, so the cycle is worse and worse.
越来越多的二氧化碳气体，酸雨来临，使更多的树死了，这样的循环是每况愈下。
For instance, when dead trees decompose, they release the greenhouse gas carbon dioxide into the atmosphere.
例如，当树木死亡腐烂分解，它们释放的二氧化碳排放到大气层。
There were no effects of open chest surgery upon anatomical dead space or metabolism of oxygen and carbon dioxide.
剖胸本身对解剖死腔和氧及二氧化碳代谢无重要影响。
There were no effects of open chest surgery upon anatomical dead space or metabolism of oxygen and carbon dioxide.
剖胸本身对解剖死腔和氧及二氧化碳代谢无重要影响。
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