think on your feet

US /θɪŋk ɑn jʊər fiːt/
UK /θɪŋk ɑn jʊər fiːt/
"think on your feet" picture
1.

隨機應變, 快速反應, 即興發揮

to be able to think and react quickly, especially in an unexpected situation

:
A good salesperson needs to be able to think on their feet.
一個好的銷售人員需要能夠隨機應變
When the unexpected question came, she had to think on her feet to give a suitable answer.
當意想不到的問題出現時,她不得不隨機應變才能給出合適的答案。