自从美索不达米亚和埃及时代以来，玻璃就已经被制造出来了，它只不过是沙子、苏打灰和石灰的混合物。
Glass, which has been made since the time of the Mesopotamians and Egyptians, is little more than a mixture of sand, soda ash and lime.
以尼日利亚北部的卡诺州而言，五年之前，该州已经暂停所有的脊灰免疫活动达两年之久。
Take the state of Kano in northern Nigeria. Five years ago, this state suspended all polio immunization campaigns for two years.
星期五，一辆汽车在冰岛埃亚·菲亚·德拉冰盖火山喷发出的火山灰中行驶。
A car is seen driving through the ash from the volcano eruption under the Eyjafjallajokull glacier in Iceland, Friday.
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