But the objects are at different locations at a given time.
但是它们在同一时刻分别在不同的位置
This is a very good way to explain what you are doing at a given moment in time.
这个句型可以很好地解释在某一时刻你正在做些什么。
Therefore, mathematically at a given time t, we can trade t for v and put it into this formula.
因此,从数学角度来说,在给定的时刻 t,我们可以用 v 来表示 t,并代入这个式子
Even if they're given healthy food at the same time, they'll tend to ignore the healthy food and eat a diet like this.
即使同时给它们喂食健康食品,它们也会选择前者的食物,而不吃健康食品
But before you even do that, I want to define for you an important concept, which is the velocity at a given time, v .
但在这之前,我要给你们定义一个重要的概念,也就是给定时刻的瞬时速度v
If you want to know how fast it's moving at a given time, if you want to know the velocity, I just take the derivative of this answer, which is 10-10t.
如果你想知道它在给定时刻的运动有多快,如果你想知道它的速度,我只要对这个式子求导,得到10-10t
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