In any field of endeavor, it is impossible to make a significant contribution without first being strongly influenced by past achievements within that field.
在任何努力领域，如果不首先受到该领域过去成就的强烈影响，就不可能作出重大贡献。
It is practically impossible to prevent at least some bugs getting into food in the field, no matter how stringent the hygiene rules.
无论多么严格的卫生规定，事实上都不可能阻止至少是一些病菌进入田间的食品。
It may be impossible to clarify the past until all interested parties have disappeared from the field.
可能只有当所有有关人员都从这个舞台上消失后才能澄清历史。
It was impossible to miss the white sign that hung over the wall of Saint Mary's high school lacrosse field yesterday.
昨天，在圣玛丽高中曲棍球场地的围墙上，高悬着一句白色的标语，要我怀念那东西绝对是没戏的。
Just when the magnetic field will flip is impossible to predict from what is known at the moment; the best guess is that there are still several centuries to go.
到底什么时候磁极将会颠倒从目前已知的证据中去预测还不能做到，但对此最适宜的猜测便是那一天的到来是好几个世纪以后的事情了。
This suggests that if there exist arbitrage opportunities in the field of commodity, it is almost impossible to prevent people from doing that.
这表明，如果商品领域中存在套戥机会，几乎很难防止有人不这样做。
From a technology standpoint, at the time, it was impossible to field a high-quality web client or mobile product, but that time wouldn't last.
从技术角度，当时不可能推出高质量的客户端或手机端产品，但这种情况不会持续。
The goal is not to eradicate it-that is impossible-but to tilt the playing field towards legitimate services.
根除是不可能的，目标应是转向合法的服务。
My father wanted me to become a doctor, but I knew it would be impossible for me to be successful in that field.
我父亲想要我成为一名医生，但我知道我在那个领域将是不可能获得成功的。
Since it is impossible to know the consequences of allthese variables each time paint is applied, a simple field method is needed toarrive at the proper pressure.
鉴于每次喷涂时不可能知道是哪些变量所造成的结果，所以需要一个简单的现场试验来判断压力是否合适。
But an experimental science makes itself impossible when it delimits its field of work in accordance with theoretical concepts.
但当实验性的科学将它自己划定在与其理论概念相一致的范围内时，就是不可能的了。
Since it is impossible for a man to know everything that normally, youth is encouraged to specialize in a field, and ask him to be a reliable expert in his field.
人不可能什么都会、什么都懂，所以我们都鼓励年青人要学有专精，以便在他所精通的领域里扬名立万。
Directional technology of cross-country running train especially, must go on in field, school it is impossible for playground to replace.
尤其是定向越野跑的技术训练，必须在野外进行，学校的操场是不可能代替的。
But look at the field of society and economy - there, almost everything is considered impossible.
但另一边厢，一碰上社会经济的范畴，几乎一切都被视为不可能。
In recent years, with the mature of the GPRS mobile communication technology, it's impossible to apply it to power SCADA field.
近年来，随着GPRS移动通信技术的成熟，将其应用于电力SCADA领域逐渐成为可能。
The routine wave superposition approach cannot be used in reconstruction and prediction of a coherent acoustic field, because it is impossible to separate the pressure generated by individual sources.
在相干声场中，很难将各个声源产生的声压分离开来，所以常规波叠加法不能用于相干声场的全息重建与预测。
First of all, If they aren't working in the same field as you, it's impossible to make comparisons.
但是首先，如果你跟他们所在的工作领域不一样，那就完全没有必要进行比较了。
The entanglement of the two-mode field will increase or decrease, but it's impossible to disentangle completely.
可增加或减弱双模相干光场间纠缠度，但无法使双模间完全退纠缠。
Due to great spatial variability of this hydraulic property, direct measurement seems to be infeasible and even impossible, especially for a field scale problem.
对于一个较大范围的实际问题，由于其在空间和时间上的强烈变异性，采用直接实验大量测定通常是不可行的。
Due to great spatial variability of this hydraulic property, direct measurement seems to be infeasible and even impossible, especially for a field scale problem.
对于一个较大范围的实际问题，由于其在空间和时间上的强烈变异性，采用直接实验大量测定通常是不可行的。
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