On cold winter days, having a foot warmer really helps.

We were saved from the threat of infectious diseases thanks to the vaccine.

On cold days, warm coffee is the best.

On a cold winter night, hot cocoa is the best.

The cold has become severe.

It's very cold today, isn't it?

It's difficult to go outside in this coldness.

I like to ski in winter.

Winter is the season when you can enjoy skiing.

Please bring out the winter clothes.