scientist

我的朋友是研究气候变化的科学家。

My friend is a ___scientist who studies climate change.

居里夫人是一位著名的科学家，她在放射性研究方面做了开创性的工作。

Marie Curie was a famous ___scientist who conducted pioneering research on radioactivity.

我姑姑是科学家。她研究植物和动物。

My aunt is a ___scientist. She studies plants and animals.