be thin on top

US /bi θɪn ɑn tɑp/
UK /bi θɪn ɑn tɑp/
"be thin on top" picture
1.

頭頂頭髮稀疏, 開始禿頭

to have very little hair on the top of one's head; to be going bald

:
He started to be thin on top in his late twenties.
他在二十多歲時開始頭頂頭髮稀疏
My grandfather used to joke that he was just thin on top, not bald.
我爺爺以前開玩笑說他只是頭頂頭髮稀疏,而不是禿頭。