批评人士说，地下一次大的二氧化碳泄漏就像核燃料泄漏一样危险。
A large leak of underground carbon dioxide could be as dangerous as a leak of nuclear fuel, critics say.
科学家和工程学家会向大家证明突发性的、灾难性的储存地二氧化碳泄漏事件离我们还“极其”遥远。
Scientists and engineers will have to prove that the possibility of a sudden, catastrophic carbon dioxide release from a storage site is exceedingly remote.
二氧化碳泄漏会带来健康风险。由于二氧化碳比空气重，因此可以在低洼地区和通风差的地区累积。
Spills would also be a health risk, since carbon dioxide is heavier than air, and so can build up in low-lying or poorly ventilated spots.
虽然CCS技术取得了长足的进步，但仍面临着很多问题，如二氧化碳泄漏问题、技术难点、建设和运行成本高昂等。
Although substantial advance has been made in CCS technology, many challenges remain, such as the leakage of CO2, technical bottlenecks and high facility construction and operational costs.
地质学家首先要确定所选地点的地质结构是否合适，然后计算出可以储存二氧化碳的数量，最终对地层进行装备处理，以防止泄漏并确保安全。
Geologists have to determine if there is a suitable underground site, calculate how much carbon dioxide it can hold and then equip it in a way that prevents leaks and ensures safety.
另一方面，海底碳储存也引起关注，人们担心二氧化碳可能会慢慢地泄漏到海水里。
On the other hand, undersea storage has raised concern that carbon dioxide could slowly leak into ocean water.
页岩气所排放的温室气体主要有两类：燃烧产生的二氧化碳以及页岩气井开采过程中的甲烷泄漏。
Greenhouse gas emissions from shale gas are predominantly down to two things: carbon dioxide produced when the gas is burned, and methane that leaks out while the well is being exploited.
但是，Kharaka博士依然建议，二氧化碳的固存应该局限于深蓄水层，这些蓄水层上方有很多层页岩叠加在一起，可以防止泄漏。
But Dr Kharaka nevertheless suggests that the sequestration of carbon dioxide should be confined to deep aquifers, where overlying layers of shale would be likely to prevent leaks.
科学家们不知道那种自然过程需要多长时间，不过，据麦克林博士说，这被视为限制因素，而且在那段时间内，二氧化碳有可能泄漏。
Scientists don’t know how long that natural process will take, but it is considered the limiting factor, according to Dr. McLing, and the CO2 could leak out during that time.
压力集团绿色和平组织(Green Peace)认为二氧化碳最终不会从地下泄漏出来是不可能的。
Greenpeace, a pressure group, argues that it is impossible to be certain that carbon dioxide will not eventually leak out of the ground.
可是，许多地区都不适合将二氧化碳埋入地下，人们担心储藏的二氧化碳会泄漏。
But sequestering carbon dioxide underground is impractical in many areas, and it raises fears that the stored gas will escape.
一位住在俄亥俄州的反煤炭资源者ElisaYoung说：“对我来说，科学家说二氧化碳是否会泄漏并不重要。
“It doesn’t matter to me if a scientist says it may or may not leak, ” said Elisa Young, an anti-coal activist who lives nearby on the Ohio side of the river.
其中，光学法是基于二氧化碳与空气的折射率有差别，利用彩色纹影法和阴影法原理来判断泄漏；
The optic method, which based on the difference of the refractive indexes between carbon dioxide and air, estimate leaks according to principles of Schlieren and Shadow-graph.
地质学家们需要确定地下是否有合适的地点，计算其对二氧化碳的存储量，然后再配备设施防止二氧化碳的泄漏以确保安全。
Geologists have to determine if there is a suitable underground site, calculate how much carbon dioxide it can hold and then equip it in a way that prevents leaks and ensures safety.
地下二氧化碳一旦发生大量泄漏，就如同核燃料泄漏一样危险。
A large leak of underground carbon dioxide could be as dangerous as a leak of nuclear fuel.
他表示，所有人都在努力减少发电过程中泄漏的二氧化碳气体。
He said everyone is working hard to reduce CO2 emissions from power generation.
这些玄武岩还会与二氧化碳发生化学反应，从而减少二氧化碳的泄漏。由于在这个海床上覆盖着一层沉淀物，二氧化碳的泄漏便又得到了进一步的减少。
The basalt and the CO2 would react with each other, reducing the scope for leaks, which would be further diminished by the blanket of sediment that covers the ocean floor in that area.
这些玄武岩还会与二氧化碳发生化学反应，从而减少二氧化碳的泄漏。由于在这个海床上覆盖着一层沉淀物，二氧化碳的泄漏便又得到了进一步的减少。
The basalt and the CO2 would react with each other, reducing the scope for leaks, which would be further diminished by the blanket of sediment that covers the ocean floor in that area.
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