保持速度 meaning in English

maintain the speed
to maintain a speed

Keep speed as long as possible , no 1 in traffic
尽可能保持速度，你是第一个。
He worked the tyres harder trying to keep up the pace in the second stint which probably just killed him
为了在第二阶段保持速度，他让轮胎工作得厉害。
Drive safely . buckle the safety belt each time you drive a vehicle and keep the speed under 80km / h . this helps make you look 3 . 4 years younger
谨慎驾驶.每次开车时扣好安全带,保持速度在80千米每小时以下,这会让你看上去年轻3 . 4年