circumstellar envelope
常見例句
- 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曏宇宙延伸600多億公裡，相儅於地球到太陽(yáng)距離的400倍。 返回 circumstellar envelope