It's double-sided, it has a sharp edge both sides, and it's symmetrical.
它有双面，两侧边缘都很锋利，而且相当对称。
If something has been going on for billions of years, you wouldn't expect a sharp edge.
如果什么东西是存在了亿万年的，那么你就不用期待一个明显的边界。
But natural selection swings a sharp edge, and the teen's sloppier moments can bring unbearable consequences.
但是，自然选择是把双刃剑，青少年的草率会带来令人无法承受的后果。
Using pliers or a pipe wrench to tighten a bolt or nut. This may scar the bolt head or nut creating a sharp edge.
使用钳子或管扳手拧紧螺栓或螺帽。这样可能会刮伤螺栓头或螺帽，从而形成尖锐的边缘。
Keeping a sharp edge on chisels and plane irons is absolutely necessary for the successful and safe use of these tools.
为了使凿刀和刨子好用且安全，必须保证他们的刃足够锋利。
'it's a very clean cut,' said the Rat, examining it again attentively. 'That was never done by a branch or a stump. Looks as if it was made by a sharp edge of something in metal. Funny!'
“伤口很整齐，”河鼠再一次仔细检查他的腿。“绝不会是树枝或树桩划破的。看起来倒像是被什么锋利的金属家伙划的。怪事！”
One, two, three ... three times at the other ... so eight specific actions by him, knocking it with another stone, to take off a flake, and to leave this almost straight line, which is a sharp edge.
所以他不多不少恰恰打了八次，利用其他石头来打磨它，敲掉一小薄片，留下这边面几乎呈现直线，边缘相当之锋利。
This picture echoes an old Chinese poem: Sharp edge of a sword comes out from grinding, and plum blossom's fragrance comes from the bitter cold.
这张照片和一首中国古诗产生了共鸣：宝剑锋从磨砺出，梅花香自苦寒来。
Cuts can become infected if a person USES nonsterile or dirty cutting instruments - razors, scissors, pins, or even the sharp edge of the TAB on a can of soda.
如果一个人使用未经消毒或肮脏的切割工具——剃刀、剪刀、别针，甚至是一听汽水标签的尖锐边缘，切割可能会导致感染。
Teams that can accomplish this will create more useful systems and give their organizations a sharp competitive edge in the marketplace.
能完成这项工作的团队会创造出更加实用的系统，并使得他们的组织在市场中更有竞争力。
Next, there is Sharp. It spent a fortune leading the industry's technical edge, by increasing the panel size from one production generation to another.
另外，夏普公司为能在产业技术上保持领先投入了大量资金，一代接一代地扩大平板面积。
Few programmers wanted to be on the bleeding edge, even if they were already bleeding a little from the sharp edges of CVS.
很少有程序员愿意冲在易于流血的最前沿，即便是他们已经因为CVS受了伤。
Stylish and sharp, Wallis had a vaguely raffish edge.
而华丽斯则时髦且鲜明，恍惚带着几分轻浮。
They look like chipped cobbles, and they were made simply by taking one large piece of stone and striking it with another, chipping off a few bits to make at least one sharp cutting edge.
它们外表看来就像一颗颗稍稍锤击过的鹅卵石，而且它们制作简单，通常就是拿两颗石头互相锤击，至少把一端锤打出一个尖锐的边缘出来。
The sharp part of a tool, such as the cutting edge of a knife or ax.
刀刃，斧刃工具的锋利部分，如刀片或斧头切割边。
Place "A" panel (4" x 6"), sharp burr edge down, on bottom half of (4" x 12") so that cut edge of (4" x 6") barely covers all oil.
将A板（4*6）毛边向下平放在（4*12）板的下半部，一时（4*6）板刚好覆盖所有的油；
A good eyepiece will render a sharp image in the central parts of the field of view, but toward the edge not even the best and most expensive eyepieces can produce a perfect image.
好的目镜在视场中央成像锐利，但在目镜的边缘即使最好和最昂贵的目镜成像也不行。
Explain the value of a really sharp point and edge, the latter, particularly with a double edged knife, being as much to prevent the knife from being seized as for slashing.
解释真正锋利的刀尖和刀刃的价值，后者，尤其对于双刃匕首来说，可以用削划在很大程度上防止对手抓刀。
Suddenly, a sharp - eyed farmer gave a shout and pointed towards a strange light at the edge of the woods.
突然，一个眼尖的村民朝着森林边上一点奇异的光指去并喊了一声。
The blade is hardened to maintain a long lasting sharp edge and is easily field replaceable.
刀片性能高，可保持长期的锋利边缘，现场更换简便。
Not only do they have a sharpened peg of a tooth but their teeth narrow down to a razor sharp edge at the back making the tigers bite much more lethal.
它们不仅仅有锋利的三角状牙齿，而且背面向下逐渐收缩成剃刀一样锋利，这使得老虎的咬更加致命。
Up and down the coast the line of the forest is drawn sharp and clean on the edge of a seascape of surf and sky and rocks.
在由海浪、天空和岩石构成的海景边缘，森林的线条沿着海岸起伏，被勾勒得鲜明清晰。
Such an Angle is not too sharp in order to allow the use of blades that are not too thin for maintaining a stable quality of the blades at the cutting edge.
这个角度不太锋利是为了使用不太薄的刀片以维持刀锋处稳定质量。
The results of numerical simulation of the hypersonic flow around a plate with a sharp leading edge are presented.
本文描述绕锐前缘平板高超声速流动的数值模拟结果。
This blade has an edge as the higher order face of the crystal anisotropic etching and the edge inclines at a sharp angle to the polished face as described above.
该刀片具有作为结晶各向异性蚀刻的高次面的刃口，该刃口相对于上述研磨面以锐利的角度倾斜。
It indicates that the rotary-arc gap switch employing a sharp knife-edge electrode as a third trigger electrode can distinctly reduce the electrode erosion and prolong the lifetime of the switch.
在不同开关结构、不同电极材料和不同电流波形情况下对开关进行了单次触发放电实验，验证了旋转电弧、场畸变间隙开关能够有效地减轻开关电极的烧蚀程度；
That's an area where Sharp maintains a technological edge due to its expertise with low-energy devices.
由于具备低耗能设备的专长，夏普在这个领域保持着技术优势。
That's an area where Sharp maintains a technological edge due to its expertise with low-energy devices.
由于具备低耗能设备的专长，夏普在这个领域保持着技术优势。
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