He mastered the technique of refining metals.

He issued a statement about the problem.

The fundamental evil of man is deeply rooted.

The burial practice in Japan is an important culture that symbolizes family ties.

My father works in pottery manufacture.

He is learning the technique of manufacturing pottery.

He defended justice like a paladin.

Plants show phototropism, growing towards the light.

She has polycystic ovary syndrome.

Due to the impact of the new coronavirus, we are forced to live a life with masks.