It is, therefore, essential that a banksman be appointed to warn the operator of hazards that cannot be seen from the operator's position.
重型运土设备使用时，操作人员只能看到有限的区域，因此，必须指派矿口监工随时警告操作人员在操作位置上无法发现的危险。
But they cannot be seen or touched.
但他们不能看不见，摸不着。
But this cannot be seen to happen only on Rwanda's terms.
但这一切却无法得到解决，除非按照卢旺达的条件来办。
The solutions to real problems cannot be seen in advance.
解决实际问题的办法无法事先看到。
Being very small, atoms cannot be seen by ordinary methods.
由于原子太小，用普通方法就不能见到原子。
An atom is something very small which cannot be seen by the eye.
原子体积微小，人们无法用肉眼来观察它。
Many of the stars cannot be seen because they are too far away .
由于距离太远了，许多星星我们都不能看见。
The stars are beautiful, because of a flower that cannot be seen.
星星是很美的，因为有一朵看不见的花儿。
But he is so far away from the camera that his face cannot be seen.
但是他离摄像机太远了，面部还是看不清楚。
There are few Windows, and the interior cannot be seen from outside.
只有少数几个窗，不能从室外看到室内。
So now we can see that the modes cannot be seen in every measurement.
因此我们现在可以看出，在每次测量结果中有些模态是观察不到的。
The color code cannot be seen and highlighted entries are not discernable.
看不到颜色代码，无法辨认被突出显示的条目。
This is delicate, because he cannot be seen to go behind Mr Eroglu's back.
这也很棘手，因为他不能被发现支持埃尔奥卢。
Not all the substance is visible. Air cannot be seen but it is substance.
并不是所有存在的物质都是可以看得见的。空气看不见，但它是物质。
Nuclear radiation cannot be seen, smelled, or otherwise detected by normal senses.
核辐射看不见，闻不到，也不能通过我们正常的感官能够觉察到。
Remember that radiation cannot be seen, smelled, or otherwise detected by human senses.
记住放射物无色，无味，也不能被人类的感官所感觉到。
Smaller meteors cannot be seen during the day, and they do not have such a long tail.
小的流星在白天是看不见的，也没有那么长的尾巴。
The main house has two floors, but from the majority of perspectives this cannot be seen.
住宅的主要部分有两层楼，但在多数的视角并不能被看到。
Because dark matter cannot be seen astronomers detected its presence through indirect evidence.
由于暗物质不可见，天文学家们采取了间接途径来测知它的存在。
So far, the scientists have been hiding objects so small they cannot be seen with common sight.
到目前为止，科学家们一直致力于将一些小的事物进行隐藏，普通肉眼是看不到的。
At the same time, Mr Ban knows that he cannot be seen to be too cosy with the American superpower.
同时，潘基文知道，他不能让外界看来与超级大国美国过于亲密。
Yet Mr Martinelli cannot be seen as buckling to foreign pressure if he is to maintain his popularity.
可是，假若ricardoMartinelli要维持他的声望，他不可能让外界认为向外国压力让步。
The best and most beautiful things in the world cannot be seen or even touched. Must be hard to feel.
世上最好最美的事物是看不到甚至触摸不着的。必须用心才能感受到。
This squeezes the coloured oil into a tiny droplet in the corner of the pixel, where it cannot be seen.
可将彩色油挤压成一颗微小液滴，挤入不可见的像素角落。
Ingredients cannot be seen before in a country might begin to appear in local markets, shipped from abroad.
以前在整个国家里从没见过的材料可能会从国外运来，开始出现在当地的市场。
The outreach work through hospitality in our house cannot be seen without a general goal of a new form of society.
我们住所的爱心外展工作不可能被看到，如果没有一个新型社会的大体目标。
The prince told him to send her to him, but the mother answered, "Oh, no, she is much too dirty. She cannot be seen."
王子要见见她，但是继母回答说，“哦，不行，她太脏了，不能见人。”
Far Infrared Rays (FIR), a part of natural sunlight having the longest wavelength, cannot be seen with the naked eye.
远红外线(区)，自然有阳光的波长最长的一部分，不能用肉眼看到。
This time, the focus will be on Jupiter itself, and in particular what cannot be seen beneath its colorful cloud stripes.
这一次的重点将是木星本身，尤其是它那多彩的云纹下人们无法看到的东西。
This time, the focus will be on Jupiter itself, and in particular what cannot be seen beneath its colorful cloud stripes.
这一次的重点将是木星本身，尤其是它那多彩的云纹下人们无法看到的东西。
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