Fracking involves pumping water, chemicals and sand underground at high pressure in order to release gas.

液压破碎法是利用高压将水、化学物质和沙打到地下以获取天然气的方法。

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Other natural resources to be found in Belarus include peat deposits, small quantities of oil and natural gas, granite, dolomitic limestone, marl, chalk, sand, gravel, and clay.

白俄罗斯其他已被探明的自然资源包括泥炭、石油、天然气、页岩、石灰石、泥灰土、白垩、沙、砂砾、黏土。

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The existence of vast area of tight sand rock, low permeability of sand rock and plenteous gas supply are all favorable conditions for the formation of deep basin gas traps.

大面积致密砂岩的存在、砂岩的低渗透性以及充足的天然气供应都是形成深盆气藏的有利条件。

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They had been protesting at a site in Hesketh Bank operated by energy firm Cuadrilla which was given a licence in 2008 to extract gas by pumping water, sand and chemicals into shale rock at pressure.

BBC: Hesketh Bank fracking rig protesters guilty of trespass

The process involves extracting gas from rocks by pumping in sand, water and chemicals.

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The balloons are controlled by releasing gas to go down and throwing out sand to go up.

BBC: Gordon Bennett balloon race competitors lift off