Nail growth begins at the root, which produces the cells that form the nail body.

指甲的生长从根基处开始，那里可以产生形成甲体的细胞。

youdao

When these cells lose contact with the root and form the nail body, they die.

当这些老化的细胞失去和根基的联系时，它们便形成了甲体，此时它们已经死亡。

youdao

As these cells form they produce keratin, the substance that makes the nail body hard and durable.

这些细胞形成后会产生角蛋白，正是这种物质使得我们的指甲坚固且耐用。

youdao

He catalogued a list of injuries on Noah's head and body: deep internal bruising, abrasions, nail scratches, round focal bruises around his joints indicating squeezing fingertip pressure.

CNN: Andrea Yates case: Expert says children suffered 'slow death'

Whether you are asked to give a toast at a wedding, say a few words at a birthday dinner, nail a sales presentation, or speak to the student body, might as well shoot for the stars.

FORBES: 21 Ways to Win at Public Speaking