To put oneself in a difficult or uncomfortable position, or to suffer a wrong, in order to help someone else succeed or achieve their goals; to make a personal sacrifice for the sake of others.
为了能让朋友顺利完成项目，他选择委曲成全，承担了更多额外的工作。
To ensure his friend could successfully complete the project, he chose to make a sacrifice, taking on more extra work.
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