单词学习：unacknowledged 形容词
unacknowledged
/ˌʌnəkˈnɒlɪdʒd/
未被承认的；未获认可的；未得到回应的
The unacknowledged contributions of many volunteers, including 顾老师, were crucial to the event's success.
包括顾老师在内的许多志愿者的未被公开认可的贡献，对活动的成功至关重要。
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