据估计，释放到大气中的甲烷有25%来自农场动物。
It is estimated that 25% of all methane that released into the atmosphere came from farm animals.
它异常巨大的彗核释放出大量的尘埃和气体——其彗核直径估计有18到25英里(30到40公里)——使它能够被肉眼清晰地看见。
Its unusually large nucleus gave off a great deal of dust and gas - estimated at roughly 18 to 25 miles (30 to 40 kilometers) across - appeared bright to the naked eye.
据世界卫生组织估计，使用这些燃料释放的温室气体，每年能导致150万人死亡——大多数是妇女和小孩。
The World Health Organization estimates that using those fuels, which also releases greenhouse gases, is responsible for 1.5 million deaths per year - most of them children and women.
在俄罗斯，这类排水后的泥炭地估计每年释放出1600万吨的气体，而在印度尼西亚，该数字是5080万吨。
In Russia such drainage is reckoned to free 160m tonnes of the gas every year. In Indonesia the figure is 508m tonnes.
研究小组指出，就连这个数字也可能估计不足，因为它没有解释正反馈的方方面面，比如释放出甲烷和二氧化碳正在融化的永久冻土层。
Even the new figure could be an under-estimate, the team suggests, because it doesn't account for the full range of positive feedbacks, such as melting permafrost releasing methane and carbon dioxide.
它异常巨大的彗核释放出大量的尘埃和气体——其彗核直径估计有18到25英里(30到40公里)——使它能够被肉眼清晰地看见。
Its unusually large nucleus gave off a great deal of dust and gas -estimated at roughly 18 to 25 miles (30 to 40 kilometers) across -appeared bright to the naked eye.
莫里森表示，在危机的初期阶段，日本没有公布某些关键资料。最近的估计指出，福岛核电厂释放的辐射水平，是最初承认的两倍。
Morrison says Japan withheld key data during the early stage of the crisis. Recent estimates indicate radiation released at twice the levels of what had originally been acknowledged.
据估计，一万三千年前，巨大的长毛象和其他的食草动物每年释放出960万吨强大的温室气体。
The giant animals are estimated to have released, along with other large plant-eating mammals, around 9.6 million tonnes of the powerful greenhouse gas each year - more than 13, 000 years ago.
该模型是基于气体释放速率和火灾模型来估计危险影响区域的。
This model is based on gas release rate and jet fire model to estimate the hazard area.
你估计，这本书所释放的能量，如果被烧毁，但确实有很多麻烦，估计各不相同的数量级。
When asked to estimate the energy released by this book if it were burned, however, many do have trouble, and the estimates can vary by orders of magnitude.
你估计，这本书所释放的能量，如果被烧毁，但确实有很多麻烦，估计各不相同的数量级。
When asked to estimate the energy released by this book if it were burned, however, many do have trouble, and the estimates can vary by orders of magnitude.
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