think on one's

think on one's
think on one's

think on one's
think on one's feet
[美国英语]立刻作答；头脑反应很快,脑子很快,才思敏捷；行动迅速果断
There's no time to consult reference books; you have to think on your feet in this job.
没有时间翻阅参考书了,做这项工作你得思维敏捷.

换位思考

站在别人的角度思考

站在对方的立场上考虑

Ariel wenqi is right.
In an impromptu situation, extemporaneously:
"Politicians provide easy targets for grammatical nitpickers because they have to think on their feet."

think on one's feet
换位思考;站在对方的立场思考(考虑)问题