in BRIT, also use 英国英语亦用 unrecognised
1
[ADJ 形容词]不被人注意的；未被认出的 If someone does something
unrecognized, nobody knows or recognizes them while they do it.
He is believed to have worked unrecognised as a doorman at East End clubs...
据信他在伦敦东区的夜总会当过看门人而没被认出来。
I actually knew her, but in overalls I passed unrecognised.
实际上我认识她，但是我身着工作服，与她擦身而过的时候却没被认出来。
2
[ADJ 形容词]未意识到的 If something is
unrecognized, people are not aware of it.
There is the possibility that hypothermia can go unrecognized...
人们有可能察觉不到体温的过低。
There must be many vases, bowls or bottles sitting unrecognised in people's homes...
人们的家里一定有很多不起眼的花瓶、碗或瓶子。
Until comparatively recently, dyslexia remained largely unrecognised.
诵读困难症一直没有引起太多的注意，这种情形直到最近才有所改观。
3
[ADJ 形容词]不被承认的；不被认可的 If you or your achievements or qualities are
unrecognized, you have not been properly appreciated or acknowledged by other people for what you have done.
Hard work and talent so often go unrecognised and unrewarded...
努力和天赋经常不被认可，也得不到回报。
She became ill and died with her life's work unrecognised...
她病逝了，而她一生的工作却没有得到认可。
There really is a wealth of unrecognised talent out there.
那里确实有很多怀才不遇的人。
4
[ADJ 形容词]非正式的；非官方的 An
unrecognized meeting, agreement, or political party is not formally acknowledged as legal or valid by the authorities.
...the unrecognised Islamic Fundamentalist Movement...
未被官方承认的伊斯兰原教旨主义运动
Local authorities are likely to refuse to hire facilities to unrecognised martial arts organisations.
当地的主管机构可能会拒绝向非官方的武术组织出租设备。