observational

例句:

• The observational work is carried out on a range of telescopes.
  观测工作借助于各种望远镜。
  
• Second, any observational delays are taken care of experimentally.
  来自SA
• We have experimental and observational evidence concerning things which happened before and after the origin of life.
  有关生命起源前后发生了什么，我们通过实验和观察得出了一些证据。
  
• 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.
  
• The RHIC observational evidence says this prediction was WRONG.
  来自SA
• Decide which map maker used the most direct observational information.
  来自BBC