It takes 30 minutes to complete one revolution.

坐完一圈约须 30 分钟时间。

The motor turns one revolution a minute, which is the second hand.

马达每分钟转一圈，这就是秒针。

In fact, many historians reckon the Industrial Revolution was not just one revolution, but a series of revolutions.

事实上，许多历史学家认为工业革命不仅仅是一场革命，而是一系列革命。

And one revolution is equal to the circumference of the circle: 2 pi radians.

2 x pi 弧度。

It takes longer for Venus to complete one spin on its axis than it does to complete one revolution around the sun.

金星绕轴自转一周的时间要比绕太阳公转一周的时间长。

Starting with the seeds of one revolution and ending with a second, the period teems with ideas about what it means to be a citizen as opposed to a subject, and about how God should be worshipped.

17世纪以一场革命的种子开始，以第二场革命的种子结束，这一时期充斥着各种思考：作为公民而非臣民意味着什么？应该如何崇拜上帝？