by leaps and bounds
成語所屬單字leap
by leaps and bounds — 慣用語
1. very quickly; at a remarkably fast rate of progress or improvement.
1.慣用語
釋義
以驚人的速度進步；突飛猛進
very quickly; at a remarkably fast rate of progress or improvement.
例句
Her Mandarin has improved by leaps and bounds since she moved to Taipei.
The city's public transport system has grown by leaps and bounds over the last decade.