本日の英語フレーズ　 Today’s English Phrase

Meaning: to make a significant improvement or dramatic advancement. To develop something massively (usually in a short frame of time but that is not a rule).

Example:
1. The store has taken a quantum leap from where it was and seems to be headed strongly in the right direction.
2. I think that she has shown a quantum leap in her performance and should be rewarded accordingly.