1. 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。
2. Withdrawal from family and friends, sadness, listlessness, decreased activity, and preoccupation with the events of the disaster. 对家庭或朋友表现出淡漠，悲哀，情绪低落，好动性减少，以及对灾难事件的全神贯注。
3. It struck him that the truly characteristic thing about modern life was not its cruelty and insecurity, but simply its bareness, its dinginess, its listlessness. 这让他觉得，敢情当今时世真正典型的问题，倒不在它太嫌残酷无情，毫不安全。这时代枯燥乏味，暗无天日，疲塌懈怠，这才是它的问题所在。
英英解释
n.
1. a feeling of lack of interest or energy
2. inactivity resulting from lethargy and lack of vigor or energy
