1. commonplace 平凡:happening or
existing in many place, and therefore not special or unusual.
2. automation 自動化:the use of computers and machines instead of
people to do a job.
3. prototype 原型:the first form that a new design of a car, machine etc has,
or a model of it used to test the design before
it is produced.
4. far-fetched 牽強:extremely unlikely to be true or to happen.
Ex:At the time, his ideas were considered far-fetched.
5. vacuum 真空:a space
that is completely empty of all gas, especially one from which all the air
has been taken away.
Ex:This made a partial vacuum, which kept the
cardboard attached to the mouth of the glass.