HSK 7-9
立功
lìgōng动
to render meritorious service (one the three imperishables 三不朽); to make worthy contributions; to distinguish oneself
消防员在救援中再次立功。
Xiāofángyuán zài jiùyuán zhōng zàicì lìgōng.
The firefighter once again rendered distinguished service during the rescue.
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Appears across levels (7-9) in the HSK 3.0 word list.