形容词
中文翻译：Unknown
同义词：
['calm', 'composed', 'unruffled', 'unperturbed', 'tranquil']
例句：
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1. He isa man of great phlegmaticity.
他是个非常冷静的人。
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2. The calmness of the sea was soothing to her.
大海的平静让她感到宁静。
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3. She was very composed during the difficult times.
在困难时期，她表现得非常镇定。