From a Hubble analysis of the stars' colors, Crockett and his team calculated that the star-formation boom started about a billion years ago, a comparatively recent event in cosmological history.
通过哈勃行星分析行星的色谱，科洛·科特和他的小组计算出这些恒星的形成大约在1亿年前突然爆发起来，通过在宇宙学历史上与最近的大事件的比较。
In the Lagoon Nebula, for example, infrared pictures have revealed a boom of star birth in the past five years, indicating that the region is still growing its collection of stars.
举例来说，在这张蓝色珊瑚照片中，红外线照片显示了在过去5年中恒星诞生的繁荣景象，表明这个地区仍然聚集很多恒星。
The construction boom was so big that Sanya has the greatest concentration of five-star hotels in all of China.
由于建筑业蓬勃发展，三亚已经成为中国五星级酒店最集中的地区。
The construction boom was so big that Sanya has the greatest concentration of five-star hotels in all of China.
由于建筑业蓬勃发展，三亚已经成为中国五星级酒店最集中的地区。
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