1·Each smaller thread is thinner than a human hair.
每根更小的线都比人的头发还要细。
2·He worked out how to write on rice grains, poppy seeds even human hair, and created the necessary micro-instruments to do this.
他可以在米粒、板栗种子甚至还能在人的头发上写字，还发明了各种必要的微型工具去完成佳作。
3·This machinery is so precise that a human hair couldn't even pass between the heads and spinning platters, yet it all works in terrific speeds.
这台机器是如此精确，以至于人类的头发甚至不能从头部和旋转的磁盘之间穿过，但它的运转速度却是惊人的。
4·You could actually draw out a 36,000-kilometer strand or ribbon of nanotubes stronger than steel, but maybe a thousandth the thickness of a human hair.
你真的能够拉出一条36000公里长的纳米管线，或者纳米管带，其强度比钢铁要高，但其厚度可能只是人类头发的千分之一。
5·But what can human hair be used for?
但头发到底都有什么用途呢？
6·A human hair is about 80,000 nanometers thick.
人的头发大约有80000纳米粗。
7·A human hair is about 80, 000 nanometers thick.
人的头发大约有80000纳米粗。
8·The average width of a human hair is 100 microns.
人类头发的平均宽度是100微米。
9·Can human hair support the weight of another person?
人类的头发真的能承受一个人的重量吗？
10·Each strand of hair - and it's human hair - is sewn on individually.
每一戳头发都是真人头发，人工缝合。