retention

n.保留

resurrection, resuscitate, resuscitation, ret (also retd), retail, retailer, retain, retainer, retaining wall, retake, retaliate, retaliation, retaliatory, retard, retardant, retardation, retarded, retch, retd, retell, retentive, retentively, retentiveness, rethink, reticence, reticent, reticently, reticulated, reticulation, reticule, retina, retinue, retire, retired, retirement, retirement age, retiring, retort, retouch, retrace,