He was a tubby little man in his fifties, with sparse hair.

他是个50来岁的矮胖男人，头发稀疏。

《柯林斯英汉双解大词典》

His pink scalp gleamed through his sparse hair.

他发红的头皮在稀疏的头发下泛微光。

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River of tears no longer clear, the mountains become increasingly sparse hair.

河水的眼泪不再清澈，高山的头发日见稀疏。

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Readers and viewers who know Murdoch purely as a name or as one of those figures so wealthy, and granted such frictionless mobility by their wealth, that they never seem to be in the part of the world that you expect them to be were startled to see a senior gent, with sparse white hair and a clownish smile, descend upon London.

NEWYORKER: Hack Work