sparser
adj. 稀疏的,稀少的( sparse的比較級 )
Something that is sparse is small in number or amount and spread out over an area.
Many slopes are rock fields with sparse vegetation...
許多山坡都是石頭地,植被稀疏。
He was a tubby little man in his fifties, with sparse hair...
他50來歲,頭髮稀疏,身材矮胖。