He announced his marriage by official telegram.

A lot of congratulatory telegrams arrived for her wedding.

He transmitted the information immediately.

I'm thinking about how to advertise this new product.

We have started a campaign to advertise our new product.

Traditional Japanese food is healthy and delicious.

This recipe is my family's secret.

He saw ball lightning bouncing from the window.

They overwhelmed the enemy using the strategy of blitzkrieg.

The contagiousness of this virus is very high.