OK, so, now that we know the position of the point as a function of time, we can try to study how it varies in particular things like the speed and acceleration.
好，既然我们已经知道点的位置，它是一个关于时间的函数，我们就能了解，它在诸如速率或加速度的量中是如何变化的。
Tony: ok, ok. I exceeded the speed limited. Don't suspend my driving license, please.
托尼：好的，好的，我超速了，请别扣我的驾驶证，好吗？
Now I just need a bit more "blast" and speed, but I am sure that until the opening match for Brazil I will be ok , he said.
现在我仅需要再加强点爆发力和速度，我相信在巴西队开赛时我会准备好的。
Now I just need a bit more "blast" and speed, but I am sure that until the opening match for Brazil I will be ok , he said.
现在我仅需要再加强点爆发力和速度，我相信在巴西队开赛时我会准备好的。
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