卡拉胶是一种红藻多糖，主要存在于红藻纲中的麒麟菜属、角叉菜属、杉藻属和沙菜属等生物的细胞壁中。

Carrageenans are gel-forming hydrocolloids extracted from the cell walls of marine red algae, such as Eucheuma, Chondrus, Gigartina, Hypnea.

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一个离开几年的流亡者回来说，温和的改变正在发生，就象是风把卡拉库姆沙漠的黑色的沙吹到niyazov的白色大理石首都。

An emigre returning after several years away says a gentle change is blowing across the country, like the wind that deposits black sand from the Karakum desert over Niyazov's white marble capital.

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样品数据统计显示， 卡拉沙依组储层属于低孔、低渗储层类型。

Statistic of sample data identify that the reservoir has low porosity and low permeability.

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