lethargy
n. 无精打采，死气沉沉；昏睡，嗜眠（症）
复数 lethargies
例句
Symptoms include tiredness, paleness, and lethargy.
症状包括疲倦、面色苍白和没精打采。
《柯林斯英汉双解大词典》
Becky roused up from her lethargy of distress and showed good interest in the proceedings.
贝基不再难过得无精打采，对这件事表现出极大的兴趣。
Animals which save energy by hibernation or lethargy (e. g. bats or hedgehogs) live much longer than those which are always active
通过冬眠或昏睡来节省能量的动物（例如蝙蝠或刺猬）比那些一直很活跃的动物活得更久。
