jumper是什么意思解释一下
He's a high-jumper.
The jumper from the Round Tower worked for him.
圆塔上的跳塔者，为他工作。
His clothes were dark and he wore a woolly jumper.
他的外套是暗色的的，穿了一件羊毛套衫。
Who has a lucky red jumper or something like that?
谁有一个幸运兔或者之类的东西？
The jumper-wearing Mr Marchionne is not given to self-doubt.
身穿套头衫的马尔基翁内不喜欢自我怀疑。
