the closed course through which a current of electricity runs
A switch can be used to close or break the circuit.
connect
to attach something to something else
Please connect the wires together so that the machine will work.
crystal
a small part of a substance that has many sides and is formed when the substance solidifies
Because of its unique look, crystal is an expensive type of rock.
integrate
to combine something with something else to create a whole
To improve efficiency of the company, they integrated many of the departments.
make sure
to become absolutely certain
Please make sure you turn off the light when you leave the room.
masterpiece
a very good work of art that is made with great skill, such as a movie or book
The young author's novel was a great masterpiece and was studied in many universities.
quartz
a mineral used to make clocks and watches, found in the form of a hard crystal
The watch company only uses the best quartz during the manufacturing process.
Switzerland
a country in central Europe
I want to visit to switzerland during vacation.
underwater
beneath the surface of the water
Have you ever seen the wildlife that lives underwater.
vibrate
to move side to side or back and forth very quickly in small movements
My phone vibrated loudly when you called me.
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