名词
中文翻译：懒散
同义词：
['idleness', 'lethargy', 'languor例句：1. He was in a lassitude of mind after the long flight.（长途飞行后，他心情低落。）']
例句：
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1. He was in a lassitude of mind after the long flight.
长途飞行后，他心情低落。
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2.The patient's lassitude grew worse as the day wore on.
随着时间的流逝，病人的消沉感越来越严重。
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3. She felt a sudden lassitude when she realized her mistake.
当她意识到错误时，她突然感到一阵消沉。