I attend psychotherapy sessions every week.

I used binoculars to observe birds in the mountains.

French Guiana is located in South America.

I learned how to calculate definite integrals in math class.

The calculation of the antiderivative is a fundamental part of calculus.

The calculus of variations is a branch of mathematics that deals with the optimization of functions.

I am majoring in French literature at university.

He wrote a poem using the four treasures of the study.

Analytical chemistry is a science for clarifying the components and structure of substances.

He is majoring in syntax at university.