For instance, eruptions during the snowball-Earth period are thought to have added sulfur particles to the atmosphere, blocking sunlight and cooling the planet.
比如，在“雪球地球”时期火山爆发使得空气中增加了硫粒子，它阻挡了太阳光线，使地球冷却。
2
Removes the next reference object in this queue, blocking until either one becomes available or the given timeout period expires.
从队列中删除下一个引用对象，阻塞直到有一个可用或给定超时期满。
3
Objective To observe the effect of mild hypothermia on cerebral protection during temporarily blocking partent arteries of intracranial giant aneurysms and ischemia-reperfusion period.