dark matter

• 暗物质

dark matter的英文翻译是什么意思，词典释义与在线翻译：

英英释义

Noun:

1. (cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force

dark matter的用法和样例：

例句

1. The problem is that dark matter is invisible.
   问题在于暗物质看不见。
2. As it moves outward, it's slowed down by the gravity of matter all around it.
   在暗物质向外扩张的过程中，其扩张速度由于周围物质的引力而减缓。