His tone of voice indicated that he was angry.

The mayor is working hard for the development of the village.

The Long March was an important event in Chinese history.

I made an adjustment to the schedule.

They embarked on a long military expedition, in other words, they went on a 'chousei'.

Let's look at my atlas and plan a trip.

Digital terrestrial television broadcasting has good picture quality and high sound quality.

Cygnus is one of the summer constellations.

He is conducting research on superconductivity.

We need to calculate the harmonic mean of this dataset.