We all wear woollen pullovers to keep warm.

我们都穿羊毛衫保暖。

Pullovers can be left off in this warm weather.

天气这么暖和，可以不穿套头毛衣了。

Pullovers can is left off in this warm weather.

天气这么暖和，可以不穿套头毛衣了。

Mr. Zhang: Let's have a look at those pullovers. Is there a color you like?

张先生：我们看看高领衫，有没有你喜欢的颜色？

The first Ivy League college student to graduate wearing pullovers at the ceremony.

第一个身着套头衫出席毕业典礼的常春藤名牌大学毕业生。