He found the target and shot the arrow.

Personally, I think this movie is the best.

He is an expert in chemistry.

Whenever he fails, he always sulks.

This is my first question.

An isotope refers to elements with the same atomic number but different numbers of neutrons.

Rare earth elements are essential materials for the manufacture of electronic devices.

Transition elements play an important role in chemical reactions.

He is interested in the study of constructed languages.

Artificial intelligence will be at the center of future technology.