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  • A perfect vacuum would be one with no particles in it at all, which is impossible to achieve in practice. The Latin term in vacuo is also used to describe an object as being in what would otherwise be a vacuum. — “Vacuum - Wikipedia, the free encyclopedia”,
  • Canister vacuum cleaner for home use. A vacuum cleaner, also known as a hoover (a genericized trademark) or sweeper and commonly referred to simply as a vacuum, is a device that uses an air pump to create a partial vacuum to suck up dust and dirt, usually from floors. — “Vacuum cleaner - Wikipedia, the free encyclopedia”,
  • The vacuum exercise is an exercise which involves contracting some internal abdominal muscles, primarily the Transversus abdominis muscle, and not as much the diaphragm, the "six pack" muscles or "abs" which are trained through crunches, leg raises, or other core exercises. — “Vacuum exercise - Wikipedia, the free encyclopedia”,


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