她有一头浓密的棕发。

She had a mass of auburn hair.

《柯林斯英汉双解大词典》

尽管这是平均水平，但红头发的人大约有8万根头发，黑发或棕发的人大约有10万根，金发的人大约有12万根。

Although this is the average, people with red hair have around 80,000 strands, black or brown hair 100,000 and blondes have about 120,000.

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是他，一头棕发，深蓝色的眼睛，还有脸上的笑容。

There he was, with his brown hair and deep-blue eyes, that smile on his face.

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