If something is unrecognized, people are not aware of it.
例句
There is the possibility that hypothermia can go unrecognized...人們有可能察覺不到體溫的過低。There must be many vases, bowls or bottles sitting unrecognised in people's homes...人們的家里一定有很多不起眼的花瓶、碗或瓶子。
ADJ
不被承認的；不被認可的
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.
例句
Hard work and talent so often go unrecognised and unrewarded...努力和天賦經常不被認可，也得不到回報。She became ill and died with her life's work unrecognised...她病逝了，而她一生的工作卻沒有得到認可。
ADJ
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.