The net result is a continuous flow of gas, starting as hot gases in intergalactic space and ending as a drizzle of cool gas called a "cooling flow," falling into the central galaxy.
最终的结果是一股持续的气体流,开始是星系间的热气体,结束时是一股被称为“冷却流”的少量冷气体,落入星系中央。
Graduate students starting work on their dissertations often ask me for strategic advice. What are the hot research areas?
许多开始写博士论文的研究生总要我给他们些战略性建议,比如现在热门的研究领域是什么?
Most people live on the four largest. The Hawaiian Islands were formed starting millions of years ago by hot liquid rock flowing from undersea volcanoes.
夏威夷群岛形成于数百万年前,那时,由于海底的火山暴发,大量炽热岩浆从海底涌出而形成了夏威夷群岛。
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