And when I am on the curve I am on the boundary of the surface, so there is a direction along the surface that is the curve and the other one is pointing into the surface.
当我在曲线上时，我是在曲面的边上的，所以一个是沿着曲面的边指，那个就是曲线的定向，另外一个就要指向曲面里面的那个方向。
But that seemed to be getting ahead of the conversation, so I tried to change the direction slightly.
但这似乎超越了我们谈论的话题，因此我尝试慢慢地转换话题的方向。
And so one string must be pulling in this direction and the other string must be pulling in this direction so that the net force on the system is zero.
因此一条细绳施加一个拉力，朝这个方向，另一条细绳也必然施加拉力，朝这个方向，这样整个整体合力为零。
So Japan’s communitarianism has its downside, but we Americans could usefully move a step or two in that direction.
因此日本的社群主义有它本身的缺点，但我们美国人可以朝这个方向迈出建设性的一两步。
The Internet and new information technologies are so powerful that no matter what we do, society will change. But the direction has not been decided.
互联网和新的信息科技的力量是如此强大，无论我们做什么，社会终将改变，但前进的方向仍悬而未决。
OK, so if I go in that direction, which gives me the fastest increase, then the corresponding slope will be the length of the gradient.
也就是说，如果朝该方向运动，函数值变动得最剧烈，那么相应的斜率就是梯度向量的模长。
With an open source project, the ecosystem participants don't have to worry so much that the project leader will move in an unacceptable direction.
使用开源项目，生态系统的参与者不必如此担心项目负责人向无法接受的方向移动。
Diffuse color reflects light that comes from one direction, so it's brighter if it comes squarely down on a surface that if it barely glances off the surface.
漫射光色反射从一个方向来的光，因此对于径直照射的表面来说就比仅是光线斜射过的表面更为明亮。
And so the direction of the vector is such that you will see the tip of the vector as though it's coming straight out of the blackboard.
因此矢量的方向，是你们将看到的，这个点，就好像它是从黑板里面，戳出来的一样。
In apes the joint surface points in a different direction, so that the big toe can pull away from, and grasp against, the other toes to grip on to tree limbs.
而在猩猩的足部，内侧楔骨的关节面则指向相反方向，将大脚趾从其他脚趾边推开，以便于更好的抓握树干。
So, maybe if I actually stated directly that way, see, I'm just saying the velocity vector has a length and a direction.
也许我们可以这样理解，看，我说过速度矢量有模长和方向。
Ambient color reflects light that been scattered so much by the environment that the direction is impossible to determine.
环境光色反射由四周环境散射的光量，其方向无法指定。
OK, so if we think of this function, u, that measures concentration, that means we are always going to go in the direction where the concentration decreases the fastest.
如果我们考虑函数u，它度量了浓度，也意味着，流动的方向，总是浓度减小最快的地方。
So the spring force is opposing that, so the spring force has a minus sign here to indicate the direction.
弹力方向相反，所以弹力有个负号，来表示方向。
The pull is in this direction and so the carpenter says "Okay, perceived gravity is in that direction."
拉力作用是这个方向，因此铅垂指出，而重力是这个方向。
And the frictional force, in this case will adjust itself just the right way so that Newton's Second Law in the x direction will give you, for the force, a zero.
其它情况下，摩擦力会根据情况调节自身,此时在x方向上使用第二定律,合力为0就是结果。
And just for my convenience I call this now the plus direction just for my convenience — it doesn't really matter So now we have here mg — that is gravity acting upon you.
为了方便，正方向设为向下，方向如何取并不打紧，还有重力mg的-，作用。
So, you are on a development team that is adopting Agile or thinking of going in that direction.
如果你所在的开发团队正在采纳敏捷方法，或者正在考虑向敏捷的方向转变。
This helped ensure that our education efforts could be applied across a variety of platforms, so that we had an easy exit strategy if we wanted to go in another direction.
这也确保了我们的教育成果可以在不同平台下得到应用，这样，在我们想退出某一策略去尝试另一个方向时可以轻易的完成。
XP requires simplicity at every step so that you can change direction as often as necessary.
XP要求每一步都尽可能简单，这样就可以按必需的频度改变方向了。
And then the projecting Windows stand so far out, that no one can see from our Windows what happens in that direction!
它的吊窗凸出墙外太远，谁也不能从我们的窗子这边看到那边所发生的事情。
So, what that means is that if I look at my trajectory at this point, that the acceleration vector is pointing in that direction.
这意味着如果我们在这点观察运动的轨迹，它的加速度是指向这个方向的。
Met Office spokesman said it was difficult to forecast the cloud's direction beyond that because weather systems were changing so rapidly.
气象局发言人称，由于天气系统变化太快，所以除了以上信息，很难再预测火山灰云的方向。
So the direction that music goes can also affect how we feel about it, our mood about it, so I think the next question — I play another piece for you.
所以乐曲的走向，同样可以影响我们对它的感受，影响我们的情绪，因此我觉得下一个问题，我为你们弹奏另外一曲。
So when the fibre is drawn the researchers apply a powerful electric field to ensure that the molecules in the plastic all line up in the same direction as the fibre cools.
当纤维提取出来后，研究人员会对其施加一个强大的电场，以保证纤维冷却后，塑料的分子都按照同一方向排列。
A pattern can be so distorted that the net isn't pushed in the direction of correct decisions.
图案可能会失真很严重，导致网络不会被推向到做出正确判定的趋势。
So that you're not just handed something that's entirely new to you with no idea which direction to go, we actually do set you off on an appropriate path.
这样一来就不会因为面对完全陌生的东西，而不知何去何从了，我们真心希望能把你们带到正确的道路上来。
"They knew at the time that the bridge was down, and that there was no way across, so they just set off on foot in the direction of Dujiangyan, " Li said.
李海鹏说：“当时他们了解到当地的桥梁已经断裂，根本不通车，所以他们只好步行向都江堰方向出发。”
"They knew at the time that the bridge was down, and that there was no way across, so they just set off on foot in the direction of Dujiangyan, " Li said.
李海鹏说：“当时他们了解到当地的桥梁已经断裂，根本不通车，所以他们只好步行向都江堰方向出发。”
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