idiom
think on one's feet
迅速に意思決定し、迅速に行動できる、特に緊急時に
Meaning
to be able to make quick decisions and act quickly, especially in an emergency
Example
During the meeting, she had to **think on her feet** and come up with a solution.
会議中、彼女は**迅速に考え**、解決策を見つけなければなりませんでした。