This includes expertise vital to keeping the oil pumps working: with the skilled engineers formerly on the PDVSA payroll now plying their trade elsewhere, the system limps on with a skeleton staff.
Kevin Church/BBC News
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Microbiologists have been growing microbes on agar plates for nearly 150 years, but agar’s discovery dates back to a happy accident in a mid-17th-century kitchen. Legend has it that on a cold winter day, a Japanese innkeeper cooked tokoroten soup, a Chinese agar seaweed recipe known in Japan for centuries. After the meal, the innkeeper discarded the leftovers outside and noticed the next morning that the sun had turned the defrosting jelly into a porous mass. Intrigued, the innkeeper was said to have boiled the substance again, reconstituting the jelly. Since this discovery, agar has become a staple in many Japanese desserts, from yokan to anmitsu.
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Израиль нанес удар по Ирану09:28,详情可参考搜狗输入法下载
She told us seeing the image was "one of the most exciting moments of my life".