adj.未得到应有的感激(或赞赏)的，不被承认存在(或真实)的，未被意识到的，未得到公开(或正式)承认的，非正式的

**Their contributions to the project remained unacknowledged.**
他们对这个项目所做的贡献一直未被承认。
**She felt hurt that her efforts were unacknowledged by her colleagues.**
她感到很受伤，因为她的努力没有得到同事们的认可。
**The unacknowledged debt we owe to our parents is often too large to comprehend.**
我们对父母未被承认的债务常常大得难以理解。
**It's important to address the unacknowledged biases in our society.**
认识并解决我们社会中存在的未被承认的偏见是很重要的。
**The unacknowledged feelings of jealousy between friends can lead to resentment.**
朋友间未被承认的嫉妒感可能导致怨恨。
**His unacknowledged role in the negotiations was crucial to their success.**
他在谈判中未被承认的角色对谈判的成功至关重要。
**The unacknowledged trauma of war affects many veterans long after they return home.**
战争带来的未被承认的精神创伤在许多退伍军人回家后很长一段时间内仍然影响着他们。
**There is an unacknowledged tension between the need for innovation and the desire for stability.**
在创新需求与稳定愿望之间存在一种未被承认的紧张关系。
**The unacknowledged influence of cultural norms on personal choices is a complex issue.**
文化规范对个人选择的未被承认的影响是一个复杂的问题。
**Her unacknowledged leadership skills were evident in the way she managed the team.**
她未被承认的领导才能在她管理团队的方式上显而易见。