毛线衫的英文是sweater。
1、jumper n.毛线上衣（英式英语）；宽松短上衣；围裙；跳跃者；跳高运动员；跳跃的动物；跳线；跨接线；支索；钻孔机；冲击钻杆；阀芯
pullover n.套衫；套头毛衣
2、短语搭配：
钩毛衣
crochet a sweater
打毛衣
knit a sweater
圆领毛衣
crewneck sweater
方格毛衣
plaid sweater
一件毛衣
a sweater
对襟毛衣
edge-to-edge cardigan
高领毛衣
high-necked sweater
编织毛衣
knit a sweater
高领儿毛衣
high-necked sweater; turtle-neck sweater
套头毛衣
jumper; pullover
低领毛衣
low-necked sweater
毛衣针
knitting needle
圆翻领毛衣
turtleneck sweater
手工编织的毛衣
hand-knitted sweater
让人感到刺痒的毛衣
scratchy sweater
走了样的毛衣
shapeless sweater
双语例句：
1、今天暖和，你可以褪掉你的毛衣。
It’s warm today, and you can leave off your sweater.
2、用脱水机使毛衣脱水，就不会走形。
Spin-dry the sweater, and it will still retain its shape.
3、今天早上很冷，你最好套上一件毛衣。
It’s cold this morning. You’d better slip on a sweater.
4、这毛衣才下一次水就走了形。
The sweater lost its shape after only one wash.
5、毛衣绝不能在洗衣机里绞。
Never wring/wash woollen garments in a washing machine.