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。
The mounting, placing, and operating of lighting equipment are handled by electricians. Grip men are responsible for moving scenery and camera equipment.
照明师负责安装，操作照明设备。管理布景的置景员负责搬动布景和摄影设备。
The mounting, placing, and operating of lighting equipment are handled by electricians. Grip men are responsible for moving scenery and camera equipment.
照明师负责安装，操作照明设备。管理布景的置景员负责搬动布景和摄影设备。
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