星系

In sentences Pinyin

在zài宇宙yǔ zhòu中zhōng有yǒu很hěn多duō星系xīng xì。There are many galaxies in the universe. #1291328

大多数dà duō shù大dà星系xīng xì的de中心zhōng xīn都dōu有yǒu一个yī ge超chāo大dà质量zhì liàng黑洞hēi dòng。Most large galaxies have a central supermassive black hole. #10059562