缺乏外毛细胞的英文：
absent outer hair cell

The eye is Blind if the mind is absent
心不专则眼不明

He was absent from the meeting.
他今天开会缺席。

You should not be absent from class.
你不应当旷课。

bearing outer race
轴承外座圈

He disclosed the outer covering on the bike.
他揭去自行车上的覆盖物。

He heard a voice in the outer room.
他听到外屋有人说话。

This hair conditioner is excellent for revitalizing dry, lifeless hair.
这种护发素能够非常有效地修复干枯的头发。

The flowers in their hair are pale and faded.
她们发上的花朵已经褪色枯萎了。

Her hair is naturally crisp.
她头发是天热卷的。