be thin on top
US /bi θɪn ɑn tɑp/
UK /bi θɪn ɑn tɑp/
1.
头顶头发稀疏, 开始秃头
to have very little hair on the top of one's head; to be going bald
:
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He started to be thin on top in his late twenties.
他在二十多岁时开始头顶头发稀疏。
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My grandfather used to joke that he was just thin on top, not bald.
我爷爷以前开玩笑说他只是头顶头发稀疏，而不是秃头。