1. 稀少的,稀疏的：solutes溶解物,溶质 | sparser稀少的,稀疏的 | Specimen标本,样品
2. 空氣擴散器：方頭起子,方頭螺絲把 Spanner,box | 空氣擴散器 Sparser | 沈滓空間濃度 Spatial concentration of sediment
1. The Coast Guard sees little point in discussing why ice is sparser, said Colvin.
2. Others with sparser beards and baby faces were also considered to be youthful soldiers by experts.