below the surface of the earth
underground
a house with a computer to run it
smart home
a very large city with more than ten million people living there
megacity
the salt water that covers most of the earth's surface
sea
friendly to the environment
eco-friendly
a big apartment building under the ground
earthscraper
a robot that can do your washhing and cleaning at home
robot helper
a machine with a computer inside it
smart device
a flying machine without a pilot
drone
This machine makes the food you want to eat
automatic food machine
The part of a television, computer, etc,... where you can see pictures and text
screen
A printer that can make almost every kind of object
3D printer
scientific knowledge used in practical ways in industry, for example in designing new machines
technology
to put your hand or another part of your body onto somebody/something
touch
to shut a door with a key
lock
It's in space. It's like an office with special devices.
space station
