The racism represented by this object is hard to believe today.
VOA: special.2010.03.03
The next passage: "Taste is the faculty of the judging of an object or a method of representing it by an entirely disinterested satisfaction or dissatisfaction."
下一篇:,“品尝是另一种判断事物或方法的感官作用,它表现为彻底的,公正的满足,或不满足“
So the arabesque of the plot, as I say, is a matter of encountering bad object choices and overcoming them: -- neatness, busyness--choices which, by the way, are on the surface temptations.
于是剧情精妙的发展,就变成做出错误选择然后克服困难了:,简洁,繁琐,选择其实就是诱惑。
This intense heat they project in a parallel beam against any object they choose, by means of a polished parabolic mirror of unknown composition, much as the mirror of a lighthouse projects a beam of light.
VOA: special.2010.09.01
Because any velocity I ascribe to a particle or an object, you will add a certain constant to it by the law of composition of velocity.
因为我描述的任何一个质点或者物体的速度,你都要根据速度叠加法则,给它加上某个常数
And fairly soon into the conversation I demonstrated some principle that you've probably learned in your physics class having to do with an object at rest remaining at rest unless acted upon by a force.
很快,在交谈中,我就展示了一些原理,可能你们在物理课上学过,要使静止的物体保持静止,必须有外力作用。
Still, that's not a world in which the Morning Star doesn't exist, given that what we mean by the Morning Star is that heavenly object, whatever it is, that in this world we pick out at that time in the morning looking up at the sky.
但这并不是意味着,晨星在这个世界不存在,如果给定了晨星的意思就是,一个这样的天体,不管它到底是什么,在这个世界上,在早晨的那个时候我们仰望天空,就能看到的那个天体
So,the point is,every object falling under gravity is given by the same formula, but there are many, many objects that can have many histories, all falling under gravity, and what's different from one object and the other object is, when was it dropped, from what height, and with what initial speed.
关键是,每一个受重力作用下落的物体,都有同样的表达式,但是各个受重力作用下落的物体,都有不同的初始条件,所以它们的区别在于,下落时刻,下落高度和初始速度
So I realize that the constant, c, is the initial location of the object, and it's very common to denote that by x0.
所以我发现常数c,就是物体的初位移,我们习惯用x0表示
So, the two most elementary ideas you learn are what is the average velocity of an object, as then ordered by the symbol v-bar.
你们学过的两个最基本的概念是,物体的平均速度,用"v拔"表示
So what we would like to do is to describe what the object does by drawing a graph of time versus space and the graph would be something like this.
然后我们要做的就是描述这个物体的运动,通过画一个"x-t"图,画出来的图就像这样
I think you can tell by analogy with what I did in one dimension that the position of that object at any time t is going to be the initial position plus velocity times t plus one half a t square.
你们可以类比一下我在一维情况下的结论,这个物体在任意时刻 t 的位移,等于初始位移,加上 v ? t + 1/2 ? a ? t^2
Now, I hope you guys know that much calculus, that when you take a derivative of a function of a function, namely v square over 2 is a function of v, and v itself is a function of t, then the rule for taking the derivative is first take the v derivative of this object, then take the d by dt of t, which is this one.
我希望你们了解更多的微积分知识,当你对复合函数求导时,也就是说v^/2是关于v的函数,而v本身是关于t的函数,求导的法则应该是,第一步是这一部分对v求导,然后v再对t求导,得到这一部分
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