adj.昏睡的；困倦的；无生气的
The hot weather made me feel lethargic. 炎热的天气使我昏昏欲睡。
In fact they looked tired and lethargic and old. 事实上,他们看上去很疲惫、困乏、衰老。
The bird became lethargic at noon. 这只鸟在中午时就不活泼了。
The weather made her listless and lethargic. 那天气弄得她百无聊赖、无精打采。
adj.迟钝的(不活泼的；冷淡的；困倦的；昏睡的)
adv.迟钝地(不活泼地；冷淡地；困倦地；昏睡地)
