circumstellar envelope
常見(jiàn)例句
- But the larger envelope of circumstellar dust extends some 60 billion kilometers into space, equivalent to about 400 times the Earth-Sun distance.
但是拱星四周星塵更大的外殼可以向宇宙延伸600多億公里，相當(dāng)于地球到太陽(yáng)距離的400倍。 返回 circumstellar envelope