He went to school with his new schoolbag.

He is an expert in enzymology and conducts many researches.

We are planning to go to the science museum this weekend.

He is an expert in paleoanthropology, studying the lives of ancient humans.

He is majoring in humanities at university.

He is a world-renowned osteologist.

After he solved the problem, he said, 'It's like seeing the true form of a ghost or a withered silver grass,' meaning things are not as scary as they seem.

I stabbed the needle for the injection.

Three days ago, I went to Tokyo.

He understands the importance of learning.