一次

once;one
～偿还信贷noninstallment credit/～成像照相机instant camera;Polaroid camera/～成像照片Polaroid picture/～处理single (or primary)treatment/～冻透 straight-freezing/～付清payment in lump sum/～还本贷款bullet loan/～能源non-renewable energy resources;primary energy resources/～污染primary pollution/～误差first-order error/～消费one-time consumption /～用包装nonreturnable container/～总付的方法on lump sum basis/～相机single use camera