Acceleration and velocity are both vectors.
加速度和速度都是矢量。
In recent decades, mosquito vectors of chikungunya have spread to Europe and America.
最近几十年，基孔肯雅热的蚊子媒介已传播到欧洲和美洲。
They are related to the orthonormal Cartesian vectors.
它们与标准正交笛卡尔向量相关。
如果有两个矢量。
Listing 4: Code2Data output vectors.
清单4：Code2Data的输出向量。
Then you have two vectors given on the plane.
然后得到平面上的两个给定向量。
How do we decide if two vectors are parallel?
我们平时怎么验证两个向量平行呢？
So, you could compute these two vectors explicitly.
所以你们可以明确地计算这两个向量。
To see a simple example, let us create two vectors.
为了查看一个小例子，让我们来创建两个向量。
Enum sets are represented internally as bit vectors.
Enum集合内部表现为位向量。
Will we have to know how to rotate vectors and so on?
我们需不需要掌握如何旋转向量这些知识点？
Any plane actually has infinitely many normal vectors.
每一个平面都有无数条法向量。
There are also vectors, but I won't discuss them here.
也有向量，不过在这里不作讨论。
OK, more questions? So, what else can we do with vectors?
还有问题么？，好，那么我们还能对向量干什么呢？
Hence, research is focused on improving the viral vectors.
因此，研究集中于改进病毒载体。
A cool website to share your vectors or download free ones.
一个非常酷的网站，可以分享你自己的矢量图，以及免费下载。
Altered spatial distribution of some infectious disease vectors.
传染病载体空间分布的改变。
Here are the GUI elements of Android, built using vectors to scale.
这里是AndroidGUI元素，都是矢量图构建。
This driver program comes with a lot of options for creating vectors.
此驱动程序提供了大量用于创建矢量的选项。
This time, we'll simplify the example by using vectors rather than maps.
这一次，我们将使用矢量而非map，以便简化示例。
And, of course, I am not going to try to draw all these vectors in there.
当然，我无法画出所有的向量。
These two vectors are perpendicular exactly when their dot product is zero.
当点乘的数量积为零时,这两个向量垂直。
So, we want to decompose the position vector into a sum of simpler vectors.
故我们是把位置向量，分解为简单向量的和。
Urbanization has encouraged insect vectors to adapt their breeding habits.
城市化促使昆虫媒介调整其繁殖习性。
We would like to be able to generate as many distinct infinite vectors as need.
希望能够根据需要生成任意数量的无限向量。
And, in particular, we can use this to detect when two vectors are perpendicular.
特别地，可以用这个，来检验两个向量是否相互垂直。
The first unit about cross-products,normal vectors and so on is actually useful now.
第一单元学得叉积、法向量这些,现在就有用了。
And, we can use that to measure angles between vectors by solving for cosine in this.
我们还可以通过解出式中余弦的方法，得到两向量间的角度。
So the adding and the subtraction of vectors is way more complicated than just scalars.
因此矢量的加法和减法,要比标量复杂。
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