严密封锁 yánmìfēngsuǒ tight blockade Origin Definitions Defs Strokes Stroke Words Sentences Sents 严密 嚴密 yánmì adjective rigorous strictly controlled; well-organized; thorough and precise without any loopholes封锁 封鎖 fēngsuǒ verb to blockade to seal off or block access to a place by force or authority