As a kind of new type green material that saves energy, gas concrete block is apt to produce swelling, cracking or dropping. When it USES common mortar as plaster material.

加气混凝土砌块作为一种新型绿色节能材料，加气混凝土砌块砌体用普通砂浆抹面时易出现空鼓、裂缝甚至脱落现象。

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If you happen to spill some gas or oil on the floor, newspaper will help absorb the spill and can prevent a permanent stain on concrete .

如果你碰巧将一些汽油或机油洒在地板上，报纸将助于吸收倾洒物并且可以防止混凝土永久染色。

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And so, when you think about how much cement concrete are consumed annually on the planet, this becomes a considerable point source of greenhouse gas emissions.

当你想到，在地球上每年要消耗多少的水泥混凝土的时候，这将是温室气体排放的，一个主要来源。

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The Portland Cement Association says the gas from the limestone is reabsorbed as concrete ages.

VOA: special.2009.12.01

And so, when you think about how much cement concrete are consumed annually on the planet, this becomes a considerable point source of greenhouse gas emissions.

当你想到,在地球上每年要消耗多少的水泥混凝土的时候,这将是温室气体排放的,一个主要来源。

麻省理工公开课 - 固态化学导论课程节选

Earlier this week African delegates boycotted some talks because they said developed nations were not making concrete promises on cutting greenhouse gas emissions.

VOA: standard.2009.11.06

Much of the environmental movement--committed largely to reducing the carbon footprint of 300 million Americans--doesn't want new bridges, roads, ports or much of anything that uses greenhouse gas-spewing concrete.

FORBES: New Geographer

The facility, which is called a "gas governor" and consists of a large slab of concrete, a flue pipe and a control box, is intended to regulate gas supply in the area.

BBC: The gas governor in Oxted

"It started on the evening of 24 January when protesters, I think, started tearing down one of the concrete walls in the city, and police started firing tear gas, " he said.

BBC: Egypt unrest: A Cambridge student on life in Cairo