We use encryption to protect important data.

We need to encrypt important data.

He undergoes a health checkup periodically.

The safety of this car is very high.

He reads the newspaper every day to keep up with the latest information.

This festival is held every year.

I immediately had a good impression of her kindness.

Koukan is my best friend, we always play together.

We exchanged stamps.

He is majoring in cryptography.