单词：listlessness
n. 精神萎靡；无精打采
n. inactivity resulting from lethargy and lack of vigor or energy
词型变化：名词复数形式 : listlessnesses
词性分布：
listlessness的用法和样例：
例句
- Consequently, you may experience fatigue or listlessness without realizing why.因此，你可能会莫名其妙地感到疲劳或无精打采。
- Look for changes in behaviour such as listlessness, withdrawal or aggression, and note even the slightest change.寻找行为的变化甚至是非常细微的改变，例如：无精打采、躲避或攻击行为。
词汇搭配
- listless无精打采的