n.

1. 革命，革命運動[C][U]
   The American Revolution gave independence to the Colonies.

   美國獨立戰爭使十三個州得到了獨立。

2. 革命性劇變，大變革[C][（+in）]
   The automobile caused a revolution in our way of traveling.

   汽車使旅行的方式發生了革命性的變化。

3. （天體的）運行，公轉[C][U][（+round）]
   One revolution of the earth around the sun takes a year.

   地球繞太陽運行一周需一年時間。

4. 迴轉，旋轉[C]
   They spin at 400-500 revolutions per minute.

   它們每分鐘旋轉四百到五百周。

5. 循環，（一）週期[U][C]
   The annual revolution of the earth round the sun causes the revolution of the seasons.

   地球每年繞太陽公轉而形成四季循環。

n.

1. a forcible overthrow of a government or social order, in favour of a new system.
   ▸(in Marxism) the class struggle expected to lead to political change and the triumph of communism.
2. a dramatic and wide-reaching change:
   marketing underwent a revolution.
3. an instance of revolving.
   ▸motion in orbit or in a circular course or round an axis or centre.
   ▸the single completion of an orbit or rotation.