当某件事情迅速得到改善或提高时，就可以使用短语 “by leaps and bounds” 或 “in leaps and bounds”，意思是 “突飞猛进，飞速增长”。

• Since he started his new school, his understanding of maths has increased by leaps and bounds.
  自从去了新学校，他对数学的理解就突飞猛进。
• The number of coffee shops on the high street has risen by leaps and bounds.
  商业街上的咖啡店数量如雨后春笋般激增。
• The quality of your cooking has improved in leaps and bounds since you started using that recipe book.
  自从你开始参考那本食谱做饭，厨艺就大大提高。