eras 是 era 的复数eraKK [ˋɛrə] /ˈɛɹə/发音名词1时代、年代、时期The invention of the smartphone began a new era in communication.智慧型手机的发明开启了通讯的新时代。2纪元His resignation marked the end of an era for the company.他的辞职为公司一个纪元划下句点。3代地质学Dinosaurs dominated the land during the Mesozoic era.恐龙在中生代称霸陆地。4阶段、时期口语I'm in my quiet, stay-at-home era right now.我现在正处于安静待在家的阶段。用这个字练口说→