By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
通过测量一束头发上较重的氢和氧同位素的比例，科学家可以构建一个地理时间轴。
She put aside a strand of hair from her face.
她把一缕头发从脸上掠开。
Contagious: a human head louse clings to a strand of hair.
感染力：附着在一根头发上的人类头虱。
Sarah lifted her hand and started twirling a strand of hair.
萨拉抬起手来开始用手指缠绕一缕头发。
We picked off a few fibers before we washed her off. And therewas a strand of hair, adhering to the wound margin.
清洗身体之前，我们收集了一些纤维，还在伤口边缘找到了一绺头发。
We picked off a few fibers before we washed her off. And there was a strand of hair, adhering to the wound margin.
清洗身体之前，我们收集了一些纤维，还在伤口边缘找到了一绺头发。
S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
通过测量一缕头发中较重的氢氧同位素的比例，科学家们可以构建一个地理学的时间轴。
Similar patterns exist throughout the U. S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
相似的模式在全美都存在。通过测量一缕头发中较重的氢氧同位素的比例，科学家们可以构建一个地理学的时间轴。
She tried to blow a grey strand of hair from her eyes.
她试图吹开眼前的一缕白发。
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。
Thankfully the hair loss should stabilize in a few months and your locks will resume their usual rate of growth and everyday strand loss when your child is nine months to one year old.
幸运的是在未来的几个月时间里掉发的状况会开始好转，而且开始正常的生长，当孩子在九个月到一岁时，你的掉发状态会恢复到正常值。
This image shows the difference in thickness of human hair between different ethnic groups. The strand of hair on the left is that of a Caucasian blond female.
这张图片显示了不同人中的头发厚度，左边的头发是高加索白人女性的头发，右边是亚洲男性的头发。
The symbols of all 118 elements were etched into the strand of hair taken from Professor Martyn Poliakoff, an expert in green chemistry. It was then presented to him as a birthday present.
这根承载着118个化学元素符号的头发取自绿色化学专家，MartynPoliakoff教授，并于他生日这天作为礼物回赠了给他。
University of Hawaii nanotechnology experts have invented the world's smallest brush - a device boasting bristles a thousand times finer than a strand of human hair.
美国夏威夷大学的纳米技术专家日前制造出世界上体积最小的刷子，他们说这种刷子的刷毛只有一根头发丝的千分之一那么细。
It contains multiple levels of hair such that each strand is cut a few centimeters longer or shorter compared to the other pieces of hair.
它包含了多个层次，每一层都比其他层剪得长一点，或短一点。
The material is a thin coating of carbon nanotubes - hollow and multi-walled tubes about 10, 000 times thinner than a strand of human hair.
该材料是一种由碳纳米管组成的薄涂层——这些碳纳米管是中空多壁的，比一根头发丝还要细一万倍。
Each individual strand of hair has its own cycle, growing for six to eight years, resting for a few months, and then shedding.
每根头发都有它自己的生长周期，生长6- 8年后，停止生长几个月，然后脱落。
Scientists have written what they believe is the world's smallest periodic table - on a strand of human hair.
科学家在人的一根头发上刻出了他们相信是世界上最小的元素周期表。
A strand of her hair swept Gerty's cheek with its fragrance.
她的一缕芳香的头发掠过葛泰的面颊。
And that treasure chest, with footprints of your size leading up to it, your lockpick still in the lock, and a strand of long red hair snagged on the latch?
那么那个宝箱又是怎么回事？有你那个尺寸的脚印通到那里，你的开锁工具还留在锁上，而且锁销上还卡着一根红色的长发。
I'm sitting on the edge of the tub, drying Sofie's hair, when I notice a dark strand on the crown of her head. I rub at it with the towel, generating a howl of protest.
我坐在浴缸边上给苏菲擦头发，忽然看到一丝黑色，我用毛巾蹭了几下，使得苏菲大叫起来。
A very beginner mistake is to draw each and every strand of hair.
一个很初级的错误是头发的绘制每个钢绞线。
She tucked a loose strand of hair behind her ears.
她把一缕散发夹到了耳后。
The material is a thin coating of carbon nanotubes - hollow and multi-walled tubes about 10,000 times thinner than a strand of human hair.
该材料是一种由碳纳米管组成的薄涂层——这些碳纳米管是中空多壁的，比一根头发丝还要细一万倍。
She tried to blow a gray strand of hair from her eyes.
她竭力想把眼前的一缕白发吹开。
She tried to blow a gray strand of hair from her eyes.
她竭力想把眼前的一缕白发吹开。
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