1. The Great Nebula is a cloud of glowing gas centered on four hot, blue stars located about 1, 500 light-years from the earth.
这个大星云是以离地球大约1500光年的四颗很热的蓝星为中心的发光气体云。
-- 来源 -- 英汉 - 辞典例句
2. 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。
-- 来源 -- 英汉 - 辞典例句
3. 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。
-- 来源 -- 英汉 - 辞典例句
4. The general shape of the average nebula is that of a thin circular disk somewhat thick in the center.
星云最常见的形状是中间较厚边缘较薄的圆盘。
-- 来源 -- 英汉 - 辞典例句
5. 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。
-- 来源 -- 英汉 - 辞典例句
6. The Trifid Nebula itself represents the final phase of star formation.
三叶星云本身代表着恒星形成的最后阶段。
-- 来源 -- 英汉 - 辞典例句
7. We have identified the Crab Nebula as the debris of this explosion.
我们已证明蟹状星云就是这次爆炸的遗迹。
-- 来源 -- 英汉 - 辞典例句
8. These calculations can be compared with the chemical analyses of meteorites in an attempt to ascertain the conditions in the nebula at the time of their formations.
这些计算可与陨星的化学分析相比较，从而推断在它们形成时星云中的条件。
-- 来源 -- 英汉 - 辞典例句
9. The temperature of the nebula in some places may never have risen high enough to evaporate pre-existing micron-sized interstellar grains.
