s relying on observation or experiment
a. 观察的, 观测的
[计] 观察的
1. The scientists conducted an observational study to understand the effects of climate change.
科学家进行了观察性研究，以了解气候变化的影响。
2. Her observational skills helped her notice details that others often missed.
她的观察能力帮助她注意到其他人常常忽视的细节。
3. Observational learning is an important part of how children develop new skills.
观察学习是儿童发展新技能的重要部分。