To be determined to carry on something even at the cost of one's life; to show unshakeable resolve and extreme commitment.
面对这项艰巨的任务，他发誓要以死济之，绝不退缩。
Faced with this arduous task, he vowed to carry it on at all costs, never retreating.
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To be determined to carry on something even at the cost of one's life; to show unshakeable resolve and extreme commitment.