Sunspots are dark patches marking magnetically active regions that often host solar flares and violent belches called coronal mass ejections.
黑子是太阳表面比较暗的区域，也叫活动区。那里经常发生耀斑和日冕物质抛射等剧烈的喷发现象。
This was based on the assumption that SMBHs form in a similar way to stellar-mass black holes, marking the final phase in the lifespan of massive stars that have exhausted all their fuel for fusion.
这是以大多超大质量黑洞形成过程与恒星质量的黑洞的形成过程类似的假设为基础的。 这种黑洞的形成通常在大质量恒星的生命过程的最终阶段（用尽了用于核聚变的所有燃料的时期）。
Palestinian youths take part in a bicycle rally in the West Bank city of Jenin yesterday, marking the anniversary of the mass displacement of Palestinians surrounding Israel's establishment in 1948.
昨日，在巴勒斯坦西海岸城市杰宁，巴勒斯坦的年轻人们以骑自行车上路的方式纪念因1948年以色列建国而导致的巴拉·斯坦人大规模迁移。
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