armourer的复数形式怎么写？

armourer的音标：armourer的英式发音音标为：['ɑ:mərə(r)]armourer的美式发音音标为：['ɑːrmərər]...

A good coat of mail, made by a master armourer, would last its owner a lifetime.这件上等铠甲是由一位军械大师制作, 能够它主人用一辈子了.A Serpent in the course of its wanderings came into an armourer's shop.一条毒蛇蜿蜒游进军械师的商店....

n.枪械或盔甲制造者，军械官...