The unity of knowledge and action means that knowledge and action become one.

He dug a hole in the ground and stored vegetables.

He participated in the anti-Japanese movement.

This medicine has a delayed effect, so you may not feel the effect immediately.

His project reflects his ingenuity.

It is important for men to regularly clean smegma.

The treatment efficacy of this medicine is very high.

I'm always impressed by his skillful handiwork.

Geologists believe that this area was formed by a graben.

The precipitation in this area is 500 millimeters on average annually.