revolucions

In a sentence

• Les revolucions socials han canviat la història.

  Social revolutions have changed history.

  In this example, 'revolucions' refers to significant changes or movements in society, demonstrating its use in a historical or social context.

• El motor del cotxe fa moltes revolucions per minut.

  The car engine makes many revolutions per minute.

  Here, 'revolucions' denotes the rotations or cycles of an engine, showing its application in a mechanical or technical sense.

• Els astrònoms estudiaven les revolucions dels planetes al voltant del sol.

  Astronomers studied the revolutions of the planets around the Sun.

  In this sentence, 'revolucions' describes the orbital motions of planets, illustrating its usage in an astronomical setting.