His running ability is the best in the team.

In biology, the phenomenon of moving towards light is called phototaxis.

This self-propelled lawnmower is very convenient.

She is confident in her big breasts.

This atomic bomb uses an implosion method.

The star implodes and becomes a black hole.

This area suffered major damage from bombings in the past.

We carried out a bombing on the enemy base.

I had a deep sleep last night.

I was tired last night, so I fell into a deep sleep as soon as I got into bed.