If you've got a good car that can go atahighspeed, then it's really nice to do that.
如果你的车很好,引擎驱动力充足,那么高速驾驶的感觉会很好。
2
A heavy object, like a football player moving atahighspeed, has a lot of momentum—that is, once he is moving, it is hard to change his state of motion.
一个重物有很大的动量,也就是说,比如一位高速移动的足球运动员一旦运动起来,就很难改变运动状态。
3
The automobiles running atahighspeed sorely threaten the safety of pedestrians.