firefighter的复数形式怎么写？

firefighter的音标：firefighter的英式发音音标为：['faɪəfaɪtə(r)]firefighter的美式发音音标为：['faɪərfaɪtə(r)]...

A firefighter was overcome by fumes at a blaze in a plastics factory.一名消防队员在一家塑料厂的火灾中被烟熏倒了.John is a New York City firefighter.约翰是纽约市的一名消防员.The firefighter put his life in danger to extinguish the forest fire.消防员冒着生命危险扑灭...

n.消防队员...