observational
adjective/ˌɒbzəˈveɪʃənl/
/ˌɑːbzərˈveɪʃənl/
- connected with or based on the activity of watching somebody/something carefully for a period of time, especially to learn something
观察；观测；监视 - The course helps drivers to improve their observational skills.
该课程帮助驾驶员提高观察能力。 - an observational study of cancer patients
对癌症患者的观察性研究
- The course helps drivers to improve their observational skills.