Two alligators rest their snouts on the water's surface.
两只鳄鱼把它们的大嘴栖息在水面上。
As a way of reconciling these two facts, scientists have hypothesized that nearly all of the oxygen being produced was taken up by iron on Earth's surface.
为了调和这两个事实，科学家们假设，几乎所有产生的氧气都被地球表面的铁吸收了。
The color changes are executed by two different kinds of cells in the octopus' skin, mainly by color cells on the skin's surface call chromatophores.
颜色的变化是由章鱼皮肤上的两种不同的细胞造成的，主要是皮肤表面的色素细胞。
Two electrodes that measure changes in the body's surface moisture are attached to the palms of your hands.
测量体表湿度变化的两个电极被连接到你的双掌上。
The Mariner spacecraft found that the surface of Mars, as well as that of its two moons, is pitted with impact craters formed by meteoroids falling in from space.
水手号宇宙飞船发现火星表面，还有它的两个卫星表面，都有由太空坠落的流星体造成的陨石坑。
Even though one or two degree Celsius rise in sea surface temperature for a relatively short amount of time can cause bleaching.
即使海面温度在短时间内升高一到两摄氏度，也可能会引起褪色。
During the pupa stage, they do not eat foods but do sit at the surface and breathe air through two small tubes.
在蛹阶段，它们不吃食物，但在水面游动时会靠两个细小的管道呼吸空气。
The latter two sources are limited to those few areas where surface water seeps down through underground faults or fractures to reach deep rocks heated by the recent activity of molten rock material.
后两种来源局限于少数区域，在这些区域，地表水通过地下断层或断裂往下渗透，从而接触到被近期的熔岩活动加热的深层岩石。
Just after vaccinia infects a cell, it expresses two viral proteins on the cell surface, which marks the cell as infected.
牛痘刚感染一个细胞后，就在细胞表面显示出两个病毒蛋白，这表明细胞已经感染。
Water in the sand between the two POTS evaporates through the surface of the larger pot, where drier outside air is moving.
两个罐子中间沙子的水分通过大罐的表面蒸发，使大罐外部的干燥空气开始流动。
This article covered a lot of ground in a short space, and frankly, it only scratched the surface of what these two outstanding libraries have to offer.
本文在有限的篇幅内涵盖了很大的范围，坦白地说，这仅仅触及到这两个重要库的表面。
For the light to be trapped in two dimensions, the object's surface needed to be smooth enough to cleanly reflect most of the light into the oil layer rather than scattering it at all angles.
要把光被捕获在两维的曲线状表面上时，要求物体表面非常平滑，才足以把大部分光线干净利落地反射进油层而不是分散在所有的各个角度上。
The origin of the color differences is not yet understood, but may be caused by differences in the surface composition between the two terrains.
产生颜色差异的原因还不清楚，有可能是两种地形表面成分的差异造成的。
Here you have three variables that you will reduce to two by figuring out what the surface is.
而空间中存在三个变量，需要了解曲面是怎样的，然后去掉一个变量。
In the nearly frozen water, two miles down, the bodies would be extraordinarily fragile, but they might also be preserved more fully than those found floating on the surface two years earlier.
那些易碎的尸体在两英里的海面下，在如此冷的海水里，保存的完整程度竟然好于两年前那些发现浮在水面上的尸体。
Whenever you do a surface integral for flux you have two parts of the story.
每当做通量的曲面积分时，你要做两件事。
Surface 2.0 comes with two development layers
在Surface 2.0中有两个开发层
They surface often to breathe, doing so two or three times a minute.
他们经常要浮出水面进行呼吸，每一分钟要呼吸2 ~3次。
Two other miners stumbled to the surface hours after the blast.
其他2名矿工在爆炸几小时后蹒跚地走到了地面上。
Now, if I have two lines tangent to the surface, well, then together they determine for me the tangent plane to the surface. Let's try to see how that works.
现在，假设曲面上有两条相交切线，那么这两条切线可以确定一个切平面，我们来看看这个平面是怎么搞出来的。
During the pupa stage, they do not eat, but do sit at the surface and breath air through two small tubes.
在蛹阶段，不会摄取食物，但在水面游动时会摄取，靠两个细小的呼吸角呼吸。
But the principle of focusing rays through an aperture onto a two-dimensional surface remains the same.
但其原理通过孔径聚焦光线在一个二维表面是保持不变的。
To build their macro-sized quantum processors, the Yale researchers evaporated aluminum onto a sapphire surface to create two conductive spots a third of a millimeter across.
为了建造这颗宏观尺寸的量子处理器，耶鲁学者们将铝气化后附着在一块蓝宝石表面，形成两个跨距为三分之一毫米的传导点。
After an hour or two, a triangular fin sliced the surface of the water and circled the group.
约莫一两小时后，一尾三角鱼鳍划过水面，围着一群人转起了圈。
It is a surface integral, so we need to have two variables in there.
它是一个面积分，所以这里需要两个变量。
Listing 10 shows the code snippet for the two user preferences that you want to surface later in the edit view.
清单10显示了您随后要在编辑视图中使用的两个用户首选项的代码片段。
Here, you integrate only over a two-dimensional surface, and here, only a one-dimensional curve.
在这儿，只是在一个二维曲面上做积分，这里是一维曲线。
This is the biggest energy-storage system in the world, with two reservoirs covering 820 surface acres can store up to 30 GWh storage capacity.
这个世界上最大的蓄能系统，拥有两座水库，跨域820公顷，储能达30千兆瓦时。
Because a surface is a two-dimensional object, that will end up being a double integral.
由于表面是二维的，所以结果是二重积分。
Because a surface is a two-dimensional object, that will end up being a double integral.
由于表面是二维的，所以结果是二重积分。
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