the urgency of slowing down怎么翻译这句

the urgency of slowing down怎么翻译这句
the urgency of slowing down怎么翻译这句

the urgency of slowing down怎么翻译这句
这是个词组,不是句子,意思是：
减速的紧迫性,或者说,立即减速的必要性