Genghis Khan was the founder of the Mongol Empire, and under his rule, the empire built its largest territory.

My mother has been suffering from temporomandibular joint dysfunction for many years.

This coffee contains sweetener.

Chancroid is a type of sexually transmitted disease, and if left untreated, it can potentially become severe.

Caseous necrosis was found in his lungs.

This old radio uses a cold-cathode tube.

The launch of intercontinental ballistic missiles has become an international issue.

It is said that secondhand smoke has a negative impact on health.

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

I love the class of reading Chinese classics in Japanese.