languor
n. 疲倦；无精打采；柔情；呆滞
vi. 变得衰弱无力
例句
A delicious languor was stealing over him.
一种美滋滋懒洋洋的感觉悄悄传遍他的全身。
《牛津词典》
How easy it is for even an energetic person to lapse into a pleasant languor.
让一个即使精力充沛的人颓废到慵懒的状态是多么的容易。
《柯林斯英汉双解大词典》
Moderation is the languor and sloth of the soul, Ambition its activity and heat.
节制是灵魂的无力和懒散，而野心却是灵魂的活跃和动力。
