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。
Also you can get special drills for paper that look more like a hollow tube with a sharp edge.
您也可以得到特殊的演习，纸张，看起来更像一个空心管与夏普的优势。
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。
This hammer was made for battle using a mysterious metal, its sharp edge capable of piercing shields and armor easily. Used to mercilessly crush enemies before one's eyes.
这把为战斗而生的锤子是由神秘的金属打造，锋利边缘能够轻松穿透盾牌和盔甲。它被用于砸在敌人的两眼之间无情的粉碎敌人。
Just him mentioning it gets everyone a little more sharp, a little more on edge as opposed to feeling relaxed.
正像他提到的，它使得我们更锋利，本应放松却更感觉在边边上。
Sharp edge of a reflex arc lamp indicator and band can make reading very clear, to avoid the visual errors.
一个有锋利边缘的指示器和带反射弧光灯能够使读数非常清楚，能够避免视觉误差。
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。
For various hardness and texture of the samples it can provide a good sharp edge and to maintain a total of nature.
对于各种硬度和材质的样品它可提供良好的尖锐边缘并且保持共面性。
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。
A girdle of a diamond that is so thin that it can be likened to the edge of a sharp knife.
这是一个钻石的腰带等，它可比喻为瘦身边缘一把尖刀。
A girdle of a diamond that is so thin that it can be likened to the edge of a sharp knife.
这是一个钻石的腰带等，它可比喻为瘦身边缘一把尖刀。
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