严密: strict, tight (organization, surveillance etc)...
补救: to remedy...
遍: one time, all over; all around; everywhere...
略微: a little bit, slightly...
休假: to take a vacation, to go on holiday...
渺小: minute, tiny, negligible, insignificant...
知己: to know oneself, to be intimate or close, intimate friend...
宝库: treasure-house, treasury, treasure-trove (often fig., book of treasured wisdom)...
东北: northeast...
为什么: why, for what reason...
