a person or thing that announces or signals the approach of another 通报(…即将来到)者,预告者 witch hazels are the harbingers of spring. 金缕梅预示春天的来临。 ■a forerunner of something 先驱
语源
Middle English: from Old French herbergere, from herbergier 'provide lodging for', from herberge 'lodging', from Old Saxon heriberga 'shelter for an army, lodging' (from heri 'army' + a Germanic base meaning 'fortified place'), related to harbour. The term originally denoted a person who provided lodging, later one who went ahead to find lodgings for an army or for a nobleman and his retinue, hence, a herald (mid 16th cent.)