To command with perfect composure and precision, as if everything is pre-arranged; to be perfectly calm and collected when giving orders or managing a situation.
面对突发状况，她指挥若定，有条不紊地安排各项工作，最终使团队顺利完成了任务。
Facing the sudden emergency, she commanded with perfect composure, systematically arranging all tasks, and ultimately enabled the team to successfully complete the mission.
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