| ประโยคภาษาจีน : 中文句子 | 
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|  kē xué jiā科学家  guò qù过去  rèn wéi认为  zhè xiē这些  wēi chén微尘  huán环  shì是  gāo dù高度  huó yuè活跃  xīng xì星系  de的  zhǔ yào主要  tè zhǐ特徵 | 
| Scientists had thought that these rings were key features of such highly energetic galaxies. |