My father went to Tokyo on a solo assignment.

We made a plan to explore the unexplored areas of Africa.

He likes to write short stories.

There are many words in English that are the same in singular and plural forms.

A unary operator operates on one operand.

Bile acids play an important role in breaking down fats in the body.

Sextans is one of the constellations in the southern sky.

I love the class of reading Chinese classics in Japanese.

I studied Classical Chinese in university.

He is known as an expert in psychoanalysis.