extragalactic造句

1、Extragalactic nebula is invisible to the naked eye.
我们用肉眼是看不到河外星系的。

2、N-Cat Series Combined Extragalactic Radio Source Catalogues
N-Cat系列综合河外射电源表

3、"The claim that it's extragalactic is kind of a guess," says Pravdo.
“这颗行星来自外星系的说法只是一种猜测,”普拉夫多说。

4、First Epoch VLBI Images of Three Extragalactic Radio Sources
三颗河外射电源第一历元的VLBI图

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