observed facts

• 观测事实

observed facts的用法和样例：

例句

1. This is an extraordinary and provocative observational fact.
   这是一个不平常的，激动人心的观测事实。
2. Generations of astronomers have painstakingly gathered an enormous store of facts touching on the most diverse properties of stars.
   世世代代的天文学家辛勤地积累了有关恒星各种性质的大量观测事实。