retentivo[P] retentivo (a)[E] retentive [rit'entiv] (a)[C] 保持的
retenção[P] retenção (f)[E] retention [rit'enʃən] (n)[C] 保持
reter[P] reter (vt)[E] retain [rit'ein] (vt)[C] 保持
guardar[P] guarda (f), guardar (vt)[E] ward [wɔ:d] (n|vt)[C] 看守[P] guardar (vt)[E] keep, kept, kept [ki:p, kept] (vi|vt)[C] 保持[P] guarda (f), guardar (vt)[E] guard [ga:d] (n|vi|vt)[C] 守卫