"Need Not To Know"，即NNTK，是警界暗语。警察内部保密条例NNTK，国际通用，不该知道的机密，或者理解为不该知道的不要问，不该你接触的不要接触，一般是针对保密级别低的人的，或者有回避关系的警员的。记得是柯南中出现过~~~
it's like you asked you mother where did you coming from when you was five years old, your mother would said "you still too young, you "need not" to know yet (not as you don't want to know), tell you when you a bit older,ok ^_^
need not (needn't) to know 不需要知道 /you do not (don't)need to know 不需要知道 .something you not need to know (something you don't need to know)不需要知道 !
不想知道
答：I need to say:我需要讲的是详情>>
答：telecommunication office详情>>
