I gargle every day to prevent catching a cold.

He is a foreigner, so he finds it difficult to learn about Japanese culture.

Kokuji refers to kanji that were invented outside of China.

He fought to protect his realm.

He is a famous black singer in America.

He is good at playing the guqin.

My dream is to live in the United States someday.

This realm is our treasure.

The progress of technology from the past to the present is astonishing.

The progress of technology from the past to the present is astonishing.