一根头发英语怎么说

"A strand of hair" 是一根头发的英文表达。

来源：strand在这里是名词，意思是“细丝，线股”，它与“hair”连用，表示“一根头发”。

例句：

She found a strand of hair on her sweater.
(她发现她的毛衣上有一根头发。)
He carefully examined each strand of hair under the microscope.
(他在显微镜下仔细检查每一根头发。)
She brushed a strand of hair out of her face.
(她把一根头发从脸上刷了出去。)