F1 tyres have an optimum operating temperature, and when they drop below that they rapidly lose grip, which dramatically slows lap times.
F1赛车的车胎对环境温度有要求，当温度低于底限时候轮胎就会失去抓地力，这会大大减慢圈速。
2
The mounting, placing, and operating of lighting equipment are handled by electricians. Grip men are responsible for moving scenery and camera equipment.