To spare no expense and effort; to exhaust all financial and human resources; to do one's utmost.
为了成功举办这次活动，我们团队殚财竭力，付出了巨大的努力。
To successfully host this event, our team spared no expense and effort, putting in tremendous work.
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To spare no expense and effort; to exhaust all financial and human resources; to do one's utmost.