| 单词 | 聚集物 |
| 释义 | 〔galaxy〕Any of numerous large-scale aggregates of stars, gas, and dust that constitute the universe, containing an average of 100 billion (1011) solar masses and ranging in diameter from 1,500 to 300,000 light-years. Also called nebula 星系，星群：组成天体的大量大规模的星、气或尘埃的聚集物，包括平均100(1011)亿的太阳质量，直径从1,500到300,000光年 也作 nebula〔sheaf〕A collection of items held or bound together:捆，束：被保持或绑在一起的物品的聚集物： |
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