sew vt. 縫合，縫上；縫紉 vi. 縫紉，縫severity (n.) severest adj.嚴(yán)厲的；嚴(yán)重的；劇烈的；嚴(yán)格的；嚴(yán)峻的severer adj.嚴(yán)厲的；嚴(yán)重的；劇烈的；嚴(yán)格的；嚴(yán)峻的severely (adv.) severe (adj.) severance (n.) severally (adv.) several (adj.) several pron.若干adj.幾個(gè)的；若干的；各自的sever (v.) seventy (adj., n.) seventieth (adj., n.) seventies (n.) seventh (adj., n.) seventeenth (adj., n.) seventeen (adj., n.) sevenfold (adj.) seven-year itch (n.) seven-up (n.)