During winter, my energy bill significantly increases.

I think the congee my mother makes when I catch a cold is the most delicious.

He refused my proposal.

The leaf of this tea plant is vividly green, isn't it?

He forgot to shave his beard.

An intercontinental ballistic missile is a weapon with a very large destructive power.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.

Simple Mail Transfer Protocol is a protocol for sending and receiving emails on the Internet.

Himemiko is my best friend.

This book has up to three volumes.