a woolly jumper的用法和样例：
- His clothes were dark and he wore a woolly jumper.
- Blair's style notions were put to the test when he was asked to choose a pair of women's shoes to match grey shorts and a woolly jumper.
- She prepare for all possibility by take a sunhat, a raincoat and a woolly scarf.
- She prepared for all possibilities by taking a sunhat, a raincoat and a woolly scarf.