Topology is a branch of mathematics that abstracts and generalizes the concept of space.

He was moved by the view from the top of the skyscraper.

This area has undergone such a great change that it can be described as 'the sea has turned into a mulberry field'.

His life changed just like 'fields and mountains turn into seas and oceans'.

He is immersed in the research of deep learning.

My new electric vacuum cleaner is very quiet, making cleaning easier.

Japan's gross national product is the third highest in the world.

A new play structure has been installed in the park.

She was diagnosed with polycystic ovary syndrome.

She values the virtue of chastity.