Trigonometry is a branch of mathematics that studies the relationship between angles and triangles.

He read the small print using a magnifying glass.

He solved the problem by hook or by crook.

Scientists are advancing research on nuclear fusion.

His cooking is genuine French cuisine.

Due to a planned power outage tomorrow, electricity will not be available from 9 am to 3 pm.

He is suffering from a disease of the thoracic diaphragm.

What is the market price of this product?

He is researching the effects of underground nuclear tests.

My younger brother was diagnosed with keratoconus.