I'm in the middle of a conversation, so please wait a moment.

She is studying traditional Chinese medicine and is utilizing that knowledge.

Mail arrived while I was away from home.

He was promoted to lieutenant general yesterday.

By regularly checking the key performance indicators, you can understand the performance of the company and devise improvement measures.

The Paleolithic is the first era of human history.

The Bronze Age was an important period in human history.

The Azuchi-Momoyama period was a very important time in Japanese history.

The Azuchi-Momoyama period, also known as the Oda-Nobunaga period, was a very important time in Japanese history.