洪水来临时，湖和河在同一水平面上，并且通过艾尔拉罕和哈瓦拉现代村庄附近山脉的一个裂口连接起来。
At the time of the floods, the river and lake were at the same level and connected through a gap in the hills near the modern villages of el-Lahun and Hawara.
洪水来临时，莫伊里斯湖和尼罗河在同一水平面上，并且通过现代 el-Lahun 和Hawara村庄附近山脉的一个裂口连接起来。
At the time of the floods, Lake Moeris and the Nile were at the same level and connected through a gap in the hills near the modern villages of el-Lahun and Hawara.
函数1的图像就是高度为1的水平面。
The graph of a function one is just a horizontal plane at height one.
其实它是水平面的面积元素。
Well, it is just going to be the area element in a horizontal plane.
当我提及水平面时，并不是指整个平面。
When I say a horizontal plane, it doesn't have to be the entire horizontal plane.
科学家说，其水平面每年下降达三英尺多。
Scientists say the water level is dropping about three feet a year.
这跟切割是同样的，我们用水平面切割图像。
Well, that's the same thing as cutting, I mean, we slice the graph by horizontal planes.
那时，水平面开始以每年30厘米的速度下降。
Then, the water level began to drop at a rate of 30 centimeters (about a foot) each year.
球可以在水平面上流畅地滚动。
他下降到年轻海鸥的水平面。
但是在寻找法向量时，可以确定法向量与水平面垂直。
But, when it comes to looking for the normal vector, be rest assured that the normal vector to a horizontal plane is just vertical.
那就意味着，我可能想看到，这个在水平面上的投影。
That means I want maybe to look at the projection of this guy onto a horizontal plane.
然后它投射出仅在台面之上的水平面的红外光形成的画面。
Then it covers the image in a horizontal plane of infrared light that lies just above the table.
帆船进入水的深度，从水平面到龙骨最低处测量。
The depth of a boat in the water, measured from the waterline to the lowest section of the keel.
向体前将另一脚伸出，脚要伸直，与水平面成45角。
Hold the other foot out in front of you, leg straight at about 45 degrees.
这是由于大气不能完全支配在水平面上的二氧化碳浓度。
This is because the atmosphere does not have an iron grip on the carbon-dioxide level in surface waters.
不妨想一想，考虑一个水平面，一个垂直面，或是一个球面时的做法。
That is, for example, what we do when we look at, say, a horizontal plane or a vertical plane or a sphere or a cylinder.
那就是通常意义下的水平面，如果函数本身有趣一点的话，图像也会有趣一点的。
That's what you would expect for a horizontal plane just from common sense This is more interesting, of course, if a function is more interesting.
夜间四处飞翔的普通蝙蝠在空中异常灵巧敏捷，但却无法从水平面上起飞。
The ordinary bat that flies around at night, a remarkable nimble creature in the air, cannot take off from a level place.
我们已经学过一个公式，它是关于水平面的，或者某些平行于yz平面或xz平面的平面。
Well, we've seen a formula, for example, for a horizontal plane, or for something that's parallel to the yz plane or the xz plane.
到1950年，人类活动开始产生深远影响。那时，水平面开始以每年30厘米的速度下降。
By 1950, though, human activities had started to make an impact. Then, the water level began to drop at a rate of 30 centimeters (about a foot) each year.
当观看视频或查看照片时，有一个小支架可以从背面折叠出可以让你把手机坐立在水平面上。
A small kickstand folds out from the back of the handset allowing you to sit the phone horizontally when watching videos or viewing photos.
红外照相机聚焦的是一根手指(或者相似大小的物体)破坏水平面、散射光线的点。
An infrared camera watches for spots where a finger (or similarly sized object) breaks the plane and scatters the light.
垂直的钟面和在水平面上的白色黄金表面上的机械原理能让你准确找出时间，而不用把手旋下。
Vertical dial and mechanism in the horizontal white gold case allow to find out what time it is, without taking your hands off the wheel.
可能是由于视觉系统进化，使得我们对些微高于水平面的物体过度敏感，以此帮助我们挺直腰杆。
Perhaps it's because our visual system evolved to be overly sensitive to even slight departures from the horizontal, to help keep us upright.
演习中虚构的“Pam飓风”使城市处于水平面下10英尺，这与卡特里娜飓风相像。
The fictional "Hurricane Pam" left the city under 10 ft. of water and looked a lot like Katrina.
幽灵步的关键是要缓慢且自然的接触岩壁的垂直面以及脚点的水平面所以需要用目光来注视着脚的移动。
The key to Silent Feet is slowly and simultaneously to contact the wall's vertical plane and the foothold's horizontal aspect - so visually track the movement.
幽灵步的关键是要缓慢且自然的接触岩壁的垂直面以及脚点的水平面所以需要用目光来注视着脚的移动。
The key to Silent Feet is slowly and simultaneously to contact the wall’s vertical plane and the foothold’s horizontal aspect — so visually track the movement.
幽灵步的关键是要缓慢且自然的接触岩壁的垂直面以及脚点的水平面所以需要用目光来注视着脚的移动。
The key to Silent Feet is slowly and simultaneously to contact the wall’s vertical plane and the foothold’s horizontal aspect — so visually track the movement.
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