21.   Maglev uses powerful magnets to hold a train a few millimeters from the track and propel it with little noise or vibration.

22.   Maglev uses powerful magnets to hold a train a fraction of an inch from the track and drive it with little noise or vibration.

23.   Maglev uses powerful magnets to hold a train a fraction of an inch from the track and propel it with little noise or vibration.

24.   Maglev uses powerful magnets to hold a train an inch or so above the track and propel it with little noise or vibration.

25.   Magnetic levitation uses powerful magnets to hold a train a fraction of an inch from the track and propel it with little noise or vibration.

26.   The train is held above the rails as it travels along by powerful magnets.