1. To put that speed in perspective, ski resort luges top out at 40 to 50 mph, while professional competitors in luge and bobsled can reach 85 mph and beyond. 为了让读者对此速度有个概念，滑雪场的小型雪橇最高时速一般是40到50英里，小型雪橇和长撬职业运动员时速能达到85英里