Definition: using scientific methods Level: B2
这个理论已经被科学证明了。
The theory has been ___scientifically proven.
科学证明，吸烟会导致癌症。
It is ___scientifically proven that smoking causes cancer.
研究人员必须以科学的方式工作以确保准确的结果。
Researchers must work ___scientifically to ensure accurate results.
