稀疏的
稀少的（sparse的最高级）

Sparse \Sparse\, a. [Compar. {Sparser}; superl. {Sparsest}.] [L.
sparsus, p. p. of spargere to strew, scatter. Cf. {Asperse},
{Disperse}.]
1. Thinly scattered; set or planted here and there; not being
dense or close together; as, a sparse population.
--Carlyle.

2. (Bot.) Placed irregularly and distantly; scattered; --
applied to branches, leaves, peduncles, and the like.