By leaps and bounds:
If someone or something gets better by/in leaps and bounds, he, she, or it improves very quickly.
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”。
例句
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。
