一根头发通常从每个毛囊中生长约三年，然后脱落，然后一根新头又生长。
A hair normally grows from each follicle for about three years, is then shed, and a new hair grows.
又不可指着你的头起誓，因为你不能使一根头发变黑变白了。
Neither shalt thou swear by thy head, because thou canst not make one hair white or black.
例如，一根头根上找到的dna分子通常情况下就足以确定身份了。
For example, the amount of DNA found at the root of one hair is usually sufficient.
说明根头库在控制块根同化物方面起有重要作用，并且这一过程主要主要由SS完成。
The top part of root tuber play an important role in regulating the assimilated matter, which was accomplished mainly by SS.
她的头撞到一根低矮的树枝上。
她突然举起一根瘦小的手指指向房间的另一头。
She suddenly held up a small, bony finger and pointed across the room.
我不知道“丝带”这个词，所以我把手放在自己的头发上，用三根手指顶着头，看着她的丝带说：“漂亮。”
I don't know the word for "ribbons", so I put my hand to my own hair and, with three fingers against my head, I looked at her ribbons and said "Beautiful."
他低下了头来缓解脖子的疼痛，眼睛停留在脚下生锈的铁链上，那铁链绕在一根金属杆上。
He looked down to relieve the pain of his neck, and stared at the rusty chain at his feet, which coiled around a metal rod.
所以最后我把两根带子系在一起，跳下楼梯，不过我的头从套索中溜出去了。
So finally I tied a couple of belts and jumped off the stairs, but my head slipped through the noose.
就在上到半山腰的时候，他看到了迎面走过来一头大象，大象背上背着一小捆树叶，旁边看象人拿一根小铁棒在拨弄着它的耳朵。
Halfway up the hill, he saw an elephant coming down, with a small bundle of leaves on its back and a mahout poking its ear with an iron rod.
其中一个人——可能就是斯图——趟水过去够到她，拉着手指头把她拽到岸边，然后找了根尼龙绳拴住她的手腕，把另一头系在一棵树上。
He took her by the fingers and pulled her into shore. He got some nylon cord and tied it to her wrist and then looped the rest around a tree.
我能感觉到他年近花甲时神气活现、头呆毡帽、洁白的牙齿之间叼根香烟的样子——那个时候他的牙齿仍然完好无损——汗珠挂在前额上。
I can see him with his felt hat cocked in the manner of the late fifties, a cigarette between his white teeth-which were still his own then-beads of sweat on his forehead.
这时，杰克听到一声闷响，头上一疼，有人用一根球棒或棍子敲中他的头。
Then he felt and heard a crack. Someone had swiped at his head with a bat or stick.
梅根，一个有着一双棕色大眼睛和一头染成时尚的红色的头发的快乐的女孩，打断了我们，为自己的垮掉找借口，但已泣不成声。
Megan, a delightful teenager with big brown eyes and hair dyed a fashionable shade of red, interrupts to give her own account of her collapse but is overcome with tears.
原来，就在把马克留尔拖上岸的时候，莫拉的脚扎进了一根鱼骨，等她们确认马克留尔已经安全了以后，便一头奔向学校卫生室，让护士包扎伤口。
Mora had punctured her foot on a fish bone while helping McClure out of the bay, so once he was safe, the young women headed for the campus infirmary, where a nurse bandaged her wound.
尼克拿过来一根螺栓套杆，把一头儿贴在进气歧管上，然后凑过去听了听另外一头儿。
Nick set one end of a long socket extension on the intake manifold and listened to the other end.
我头下面的石头飘浮到空中，像一根羽毛一样轻。
The rock beneath my head floated up in the air, as light as a feather.
于是每当雪球飞走,它都悄悄地叼一根造窝的草盖在“南瓜头”身上,每次就一根。
Then each time she left, he’d quietly place one piece of nesting straw over Punkinhead’s body. Just one.
为什么我会在放假的头一天四点半起床乘车去施韦青根？
Why would I get up at four-thirty on my first day of vacation to ride to Schwetzingen?
“梅根今天不能来上学了因为她最近老为挤紧的纹理所烦恼。”(小编语：老师一头雾水。)
Megan could not come to school today because she has been bothered by very close veins.
原来，由于他身上还有一根长长的绳子，绳子的另一头是他的野外生存套装背包，而背包先落地，把地面尘土高高扬起，瞬间把直径10英尺范围内的火焰给灭了，结果他没有被烧伤。
He wasn't burned because the survival kit attached to him by a long cord hit the ground first, throwing up a dust cloud that put out the fire in a 10-foot circle. He was surrounded by flames.
就在阿雷特不屈不挠地继续尝试时，杰克松开了安全带，身体从座位上弹起来，掌根重重劈在他的脸颊上，劈得他的头猛地朝后一仰。
As Arete continued trying to strangle Jack, Bauer released his safety belt, pushed himself out of the seat, and slammed the heel of his hand under Arete's jaw. The man's head snapped backward.
他这样低着头，呆想了几分钟，同时用手里的一根棍子在沙上画了许多画。
He stood thus for several minutes, with drooping head, tracing figures in the sand, with the cane which he held in his hand.
爱迪生可以为了一根丝做几千次的实验，盖茨可以闷着头几周不出门的编程。
Edison can in order to a piece of silk thousands of times experiment, gates can stuffy head a few weeks do not go out of programming.
伸展你的脊柱，好像有一根线从头顶直直的往上拉你的头，脖子和后背。
Elongate your spine as if a thread extending from the top of your crown was pulling your head, neck and back straight up towards the sky.
这样不需要动一根手指钱就存了起来，你轻而易举就一头扎进储蓄罐里了。
If the money goes out without you having to lift a finger, chances are that you'll simply let it head off into the savings pot.
她灵巧的用两根白马尾做浆，把小船从湖的这头划到那头。
Seated there she sailed from side to side of her little lake, rowing cleverly with two white horse hairs.
她粗壮的像根木桩，面颊深红，头平额凸，眼窝深陷而充满怀疑。
She was a stocky square-built woman with hard red cheeks, a flat top to her head, prominent brows and deep-set, suspicious eyes.
我用一根粗头火柴点着它。
我用一根粗头火柴点着它。
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