稀疏 few and scattered; few and far between; thin; sparse 稀疏散乱 scattering; 稀疏的晨星 a few scattered morning stars; 稀疏的枪声 scattered shots; sporadic firing; 稀疏的头发 thin hair; sparse hair; 树木稀疏。 the trees are sparse
疏松 1.(土壤等松散; 不紧密) loose; puff 土质疏松。 the soil is porous.2.(使松散) loosen 疏松土壤 loosen the soil