plain spindle

例句：

1. 1.The farmer used a plain spindle to spin yarn from the wool.
   农民用一根平直的纺锤把羊毛纺成线。
2. 2.The old woman used a plain spindle to weave her own clothes.
   那位老妇人用一根平直的纺锤自己织衣服。
3. 3. The plain spindle was easy to use and made good quality yarn.
   这根平直的纺锤使用起来简单，能织出质量很好的线。