不变

He clearly wasn't ready to shed the elegance, however—that much was obvious from his cravats, even if they were riotously colored.

对於Hermes的顾客来说，他们其实也正在改变（正如本次秀的背景板一般，宛如正在施工的模样），虽然仍旧优雅，但许多领巾的运用，使得整场秀变的年轻，不过Hermes一贯的奢华质感仍然不变，最典型的是鳄鱼皮、天鹅绒材质的使用，十分出色。

The new flap keeps essentially the same profile, but with a reduced cross sectional area at its extremities.

新副翼的形状在总体上保持不变，不过在其末端的横截面积却变小了。

In Chapter two, it is given of the three-dimensional boundary element and the boundary element space, Sobolev space for the contact boundary element problem with friction; it is proved of existence and uniqueness of the solution by variation inequality for the contact Boundary Element Method matrix equation under two kinds of condition that the contact zone is fixed and the contact zone is increasing along with the load; it is given of the expressionfor the error of the exact solution and the boundary element solution.

第2章，给出三维边界单元及边界元空间、有摩擦接触边界元问题的Sobolev空间，利用变分不等式证明了不变接触区和随载荷可变接触区两种情况下的接触边界元法矩阵方程解的存在唯一性，给出了准确解与边界元解的误差表达式，还证明了三维弹塑性摩擦接触问题凝缩矩阵解的存在唯一性，为三维弹塑性摩擦接触边界元法奠定数学基础。

The equations of the train and deck truss girder bridges time varying system were set up by using the principle of total potential energy with stationary value in elastic system dynamics and the "set in-right-position" rule for forming structural matrices.

应用弹性系统动力学总势能不变值原理及形成矩阵的"对号入座"法则，建立列车－桥梁时变系统的整体振动方程。

Based on the principle of total potential energy with stationary value in elastic system dynamics and the rule of "set-in-right-position" for formulating system matrixes, the vertical vibration equation set of the high-speed train and slab track time-dependent system was established considering the vertical connecting condition between the wheel and the rail.

考虑轮轨竖向位移衔接条件，基于弹性系统动力学总势能不变值原理及形成系统矩阵的"对号入座"法则，建立了高速列车－板式轨道时变系统竖向振动矩阵方程；分析了CA砂浆的刚度和阻尼时此系统竖向振动响应的影响规律。

The curve, to be calledλ-Bezier curve not only inherits themost properties of n-degree Bezier curve, such as endpoints properties, symmetry,convex hull property, geometric invariability, affine invariance, convex-preservingproperty, variation diminishing property and so on, but also can be adjusted inshape by changing the value ofλwithout changement of control points.

曲线不仅具有n次Bézier曲线的特性：如端点插值、端边相切、凸包性、变差缩减性、保凸性等，而且具有形状的可调性：在控制顶点不变的情况下，随着参数不同，可产生不同逼近控制多边形的曲线。

Yes.Everything changed,remains unchanged is the most brutal and fair to the cold earth.

是的，一切都变了，不变的是这个最残酷最公平的寒冷人间

I understand what Thoreau says which I have mentioned at the beginning.

我明白了梭罗所说的万物不变，是我们在变。

A nonlinear cost function is a cost function in which the graph of total costs versus the level of a single activity is not a straight line within the relevant range.

在经济规模考量下，其成本在作业水准的各个范围内维持不变，当作业水准变到另一个水准时，成本数额增加的速度较为缓慢。

This is a kind of dialectical concept of history. The classical historiography of Greece also emphasizes"change", but it treats the evolution of history in the light of permanent"unchangeability", i. e. it employs a somewhat metaphysical concept.

希腊古典史学也重视"变"，但它是从一个恒定"不变"的基点出发去观察历史的演变，这是一种带有形而上学思想的历史观。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。