dispensable

a.不必要的，不重要的，可省去的

disorganize, disorganise, disorganized, disorganized, disorganised, disorientate, disorientation, disoriented, disown, disparage, disparagement, disparagingly, disparate, disparately, disparity, dispassionate, dispassionately, dispatch, dispatch (also despatch), dispatch-box, dispatch-rider, dispel, dispensary, dispensation, dispense, dispenser, dispersal, disperse, dispersed, dispersion, dispirit, dispirited, dispiritedly, dispiriting, displace, displaced person, displacement, display, displease, displeased, displeasing, displeasingly,