投篮臂的运动指向点的提出，使投篮过程的重点技术环节“上肢动作”变得简单实用，可操作性非常强。

With the putting forward of the target point of the shooting arm, the upper arm movement, which is very essencial in the whole shooting process, has become simple and practical, and more operable.

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投篮臂的运动指向点更好地控制了投篮臂的运动方向和引导了投篮臂的加速挺直，以及充分完成屈腕过程中的中指拨球动作。

The target point helps to direct the movement of the shooting arm and accelerate the straighten of the shooting arm, thus fully complete the flicking of the ball during the process of cock wrist.

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雷克萨斯的屏幕更进了一步：你可以指向地图屏幕上的任何一个点，并获得去到那里的指引。

The Lexus screen goes a step further: you can point to any spot on the map screen and get directions to it.

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It says, well I'm going to print out first and last just so you can see it, and then I say, gee 2 if last minus first is less than 2, that is, if there's no more than two elements left in the list, then I can just check those two elements and return the answer.

然后它计算了尾点和开始点的差,如果小于2的话,也就是说数组中的元素小于等于，我对这两个元素进行比较,然后返回结果就可以了，否则的话，我们就去寻找中值点，注意它是怎么实现的,首先这个指向一个列表的开头。

麻省理工公开课 - 计算机科学及编程导论课程节选

steering. The eyes would be in the front, staring at the red spot.

我们能够看到大脑指向那个红点。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

it's clear that you want to add a vector that looks like that, because then you go from the start of this to the finish of that, you end up at the same point and you get this invisible 0 vector.

显然应该给它加上这样一个矢量,因为从这个矢量的起点指向那个矢量的终点,最终指向的是同一个点,你就得到这个不可见的零矢量

耶鲁公开课 - 基础物理课程节选