It was clear God sent you, Mr. A, as he sends Mr. X, Mrs. Y, Miss Z, and they provide the material means we need for our work.
很显然，是上帝派你来的，A先生，因为上帝也派了X先生，Y女士，Z小姐来，他们为我们的工作提供了物质上所需要的东西。
Put in X calories and you will gain Y pounds of fat, so you have to run for Z minutes to burn that off.
吸入X卡路里，你会得到Y英镑的脂肪，所以你需要跑Z分钟去消耗它。
or 2) you say “Sure, but can you do x, y and z first, so we can analyze if this is going to work before we set it into action?”
或者2）你可以说：“当然可以，但是你能不能先去做x,y,z，这样我们才能看出这件事到底是否可行。”
So, just to get you used to this idea, I'm going to draw a level surface of a function of three variables OK, so it's a surface given by the equation w of x, y, z equals some constant c.
为了令你们习惯于这个想法，我画一个三变量函数的等值面,这是一个平面,由函数w=c给出的。
You bought programs X, Y and Z.
你买了些软件，有x，有Y，还有Z。
z The problem is sometimes you cannot actually solve for x, y, z in here because this condition is too complicated and then we need a new method. That is what we are going to do.
但是问题是，有时候我们并不能解出x，y，因为这个关系方程g太复杂了,这时必须要有一个新的方法，现在就是要研究这个方法。
z You pick any two components, say the x and the z component, and you take the partial of the x component with respect to z, fz and you must make them equal. And the same with every pair of variables.
选择任意两个分量，假定是x和，你得到fx对z的偏导数，对x的偏导数，the，partial，of，the，z，component，with，respect，to，x,让它们相等，对于任意一对变量做同样的事情。
So, let's say that you have a point in space at coordinates x, y, z.
有一个点位于由x,y,z轴确定的空间。
Namely, let's say that you have a function maybe of three variables, x, y, z, df = fxdx+fydy +fzdz then you would write df equals f sub x dx plus f sub y dy plus f sub z dz.
即是说，如果你有一个,含自变量，x，y，z的函数，那么。
You can get this either by implicit differentiation and the product rule, or you could get this just by putting here, here,and here the partial derivatives of this with respect to x, y, and z.
可以通过隐函数微分法和乘法法则得到，或者直接,把关于x，y，z的偏微分放进来。
Because the gradient vectors here are f sub x, z If you have a third variable z gz then you have also an equation f sub z equals lambda g sub z.
因为这里，梯度向量就是，如果还有一个变量,那就还有一个等式fz等于λ乘以。
"A means success, "explained my father. "X means hard, Y means good ways, and Z means you must stop talking and start to work. "
“A的意思是成功，”爸爸解释说“X的意思是努力，Y的意思是好的方法，Z的意思是你必须停下来说话去工作。”
Don't sugarcoat your comments, but you could start by saying something positive: "you've been doing really well with X and y, but I owe it to you to tell you my concerns about Z."
不要给你的观点包上糖衣，但是你能够通过说一些更积极的话语开始：“你在X和Y上做的非常好，但是我不得不告诉你，我关心的是Z。”
You have the fastest team to adjust the status of each row, use the Z key, let them attack, use the X key to defense, use the C key to the release of their skills, use the V key to switch teams.
你必须用最快的速度来调整每一排队伍的状态，使用z键，让他们一起攻击，使用x键来防御，使用c键来释放他们的技能，使用v键来切换队伍。
You have the fastest team to adjust the status of each row, use the Z key, let them attack, use the X key to defense, use the C key to the release of their skills, use the V key to switch teams.
你必须用最快的速度来调整每一排队伍的状态，使用z键，让他们一起攻击，使用x键来防御，使用c键来释放他们的技能，使用v键来切换队伍。
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