A lot of their work comes down to measurement—everything from the exact angle of a swimmer's dive to the second-by-second power output of a cyclist.
他们的许多工作都归结于测量——从游泳运动员跳水的准确角度，到自行车运动员每秒的动力输出。
2
But be that as it may, whatever the exact date, whether it's 15,000, 20,000 or 30,000 years ago, the Chauvet paintings are from the dawn of art.
但是，不管其确切的日期是在15000年、20000年还是30000年前，肖韦洞窟都属于艺术的开端。
3
That's about how high an object would have to be orbiting straight up from the equator to constantly remain directly above the exact same spot on the rotating planet Earth.