即使在危机中，她依然保持着令人惊叹的沉着。
She maintained remarkable ___imperturbability even during the crisis.
谈判专家的沉着冷静，是化解僵局的关键。
The negotiator's ___imperturbability was key to resolving the deadlock.
面对嘈杂的质疑声，这位科学家以冷静沉着回应。
The scientist responded to the noisy criticism with ___imperturbability.
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