A nebula is really a discrete mass of innumerous stars.
一团星云实际上是无数星体不连续的集合体。
Many objections can be raised to this picture of planetary nebula formation.
形成行星状星云的这一图象可能会引起许多异议。
A powerful telescope can resolve a nebula into stars.
一架高性能的望远镜能从星云中分辨出星球来。
📖 牛津释义
nebula
n
(pl ~e or ~s) light or dark patch in the night sky caused by a cluster of very distant stars or a cloud of dust or gas 星云
the Crab nebula 巨蟹座星云.