In the past 45 years, the World Health Organization says suicide rates have increased by 60 percent worldwide and it predicts these deaths will rise to 1.5 million by 2020.

VOA: standard.2009.09.10

If it takes you 1 / 60 of a second to go around once, then you do it 60 times a second.

如果转一圈要 1 / 60 秒,那么一秒就转了60圈

耶鲁公开课 - 基础物理课程节选

Okay. For those who have not seen a radian, it's just another way to measure angle with the understanding that a full circle, which we used to think is 360 degrees, So a radian is roughly 60 degrees.

我想告诉那些还不懂弧度制的同学,这是衡量角度的另一种方法,理解起来是这样的,对于一个整圆,也就是我们之前所说的360°,所以1弧度大约是60°

耶鲁公开课 - 基础物理课程节选