1. by leaps and bounds - d very quickly.
2. do away with - h put an end to.
3. embrance - completely accept.
4. hologram - g a three-demensional image.
5. mainstream - b considered nromal and used by most people.
6. drone - e an aircraft without a pilot, controlled from the ground.
7. start-up - c a company that is just beginning to oparate.
8. prototype - f the fisrt model of sth new.
