undesirable act

• 不正当行为

undesirable act的用法和样例：

例句

1. The seemingly docile giant pandas have a strong sense of territory, so killing the intruder to guard her domain is a justified act, experts said.
   专家指出，看似温顺的大熊猫有强烈的领域感，咬死入侵的野猫捍卫领地，属正当行为。