extragalactic

We shall hardly even touch the captivating problems of modern extragalactic astronomy.

甚至几乎不涉及现代河外天文学中吸引人的课题.

辞典例句

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看不到河外星系的.

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This Paper has Studied the observational parameters of 20 extragalactic H 2 O megamaser Sources.

研究了至今为止已发现的20个河外H2O超脉泽源的观测参数.

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