Topology is a branch of mathematics that studies the properties of space.

He is an expert in algebraic geometry and has written many papers in the field.

He has an excellent relative pitch, and can play any song immediately.

The contest for this trophy is very intense.

They were caught up in the struggle for that position.

They struggled for the last slice of pizza.

He practices the teaching of 'Noutaka Kakusou', keeping some of his talents hidden.

The shipment of new electronic products has arrived.

He succeeded in running the marathon.

He succeeded in running the marathon.