scarf的复数,fish的复数

scarf (复数) ______________ scarfs/ scarves mine 词汇 3.
scarf的复数
为什么scarf的复数有两个
toy bear 玩具熊 bread maker面包机 scarf n. 围巾 复数为:scarves
scarf→(复数)____________ scarves/scarfs certainly 4.