A diffuse mass of interstellar dust or gas or both, visible as luminous patches or areas of darkness depending on the way the mass absorbs or reflects incident radiation.
星云星际空间的尘埃或气体或两者共同构成的巨大天体,由其对光线的吸收和反射来决定其明亮可见或黑暗一团
interstellar详细解释
in.ter.stel.lar adj.(形容词)Between or among the stars:星际的:在行星之间或之中的:例句:interstellar gases.星际气体