root hair [植] 根毛 ; 根须
root hair zone 根毛区 ; 根毛层
root-hair region [植] 根毛区
root hair formation 根毛形成
old root hair 老的根毛
hair root [组织] 毛根 ; 须根 ; [植保] 发根 ; 毛状根
Root-hair 根毛
These produce oil which flows along the length of the hair and the health of the root determines the overall health of the strand of hair.
这些会分泌油脂，油脂顺着头发流动，而发根的健康程度决定了该缕毛发的总体健康。
As you can see, along the length of the hair, there are three main parts called the bulb, the root and the shaft.
如你们所见，顺着头发的长度可以分为三个主要部分，分别是毛囊、毛根和毛干。
The next part of the hair is the root and this is the part of the hair which lies.
头发另一部分是头皮，这是头发生长的基础。
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