be quick off the mark

US /bi kwɪk ɔf ðə mɑrk/
UK /bi kwɪk ɔf ðə mɑrk/
"be quick off the mark" picture
1.

反應迅速, 理解力強

to be quick to understand or respond to something

:
She was quick off the mark to answer the difficult question.
反應迅速,回答了那個難題。
The company was quick off the mark to adapt to the new market trends.
該公司迅速適應了新的市場趨勢。