He always boasts, but in reality, he does nothing.

He has a habit of always boasting.

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

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

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

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.

He always lives a life appropriate to his lot.

He is living a life appropriate to his status.