If you describe a group of people or animals as marauders, you mean they are unpleasant and dangerous, because they wander around looking for opportunities to steal or kill.
例句
Numb with terror, she stared at the departing marauders...她嚇得呆若木雞，眼睜睜地看著劫匪們離去。They were raided by roaming bands of marauders.他們?cè)獾搅肆鞲Z作案的搶劫團(tuán)伙的襲擊。