underused
adjective uk/ˌʌn.dəˈjuːzd/ us/ˌʌn.dɚˈjuːzd/
未被充分利用的
not used as much as it could or should be
Many of these resources are sadly underused in the classroom. 可悲的是这些资源中许多都没有充分用在课堂上。
Budget airlines could revitalize underused airports. 廉价航空公司能够让未被充分利用的机场重获生机。