He thoroughly understood the problem instead.

There are three desks in the classroom.

He runs fast, as if he has legs like the wind.

This trash needs to be incinerated.

The town's trash is incinerated every week.

She was watching TV in the parlor.

From his visual angle, the problem looks completely different.

His true nature showed its horse's legs.

We went on a trip on a large passenger ship.

In philosophy, the relationship between the subject and the object is an important theme.