Whenever there's a Nick or hairline crack in an insulation sheath, the electrical field in the underlying copper subtly shifts.

在绝缘套上只要出现缺口或者毛细裂缝，线缆里的铜周围的电场就会轻微改变。

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He seemed to be catching on nothing: propping his boot on a pimple, gripping a "smear" or a hairline crack, freeing both arms from the rock to make a lunge.

像是什么也没让他抓住似的：在一块土疙瘩上支起半边靴子，然后抓向某个“污点”或是某道细小的裂纹，最后突然弹开岩石上的双臂，朝某个方向直扑过去。

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The moment that sensors detect a hairline crack anywhere in the aircraft, microscopic nano-capsules containing a high-tech adhesive would be released to seal the fissure.

当传感器检测到飞机在任何时候的一个裂痕时，包含高科技粘合剂的微观纳米胶囊将释放粘合裂痕。

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