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I composed myself, then walked on unhurriedly.
我定了定神，不慌不忙地向前走去。
《新英汉大辞典》
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I took a deep breath and composed myself.
我深吸了一口气使自己镇静下来。
youdao
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But once I'd composed myself I flirted with him a bit and got away with a ticking-off.
我一镇静下来就开始和他调情，他没有办法，责备了我几句就让我走了。
youdao