His behavior feels uncertain.

I feel uneasy about his attitude, I have no idea what he's thinking.

Shizuka is my best friend.

Fumitsuka is my best friend.

He saw ball lightning bouncing from the window.

This house still doesn't have electricity.

She used an electric massager to relieve her shoulder pain.

This power plant generates a large amount of electricity every day.

In this area, electricity is generated by wind power.

This smartphone has a power-saving mode.