It was a knee-jerk reaction on her part.

这是她未加思索做出的反应。

《牛津词典》

This, however, would be a knee-jerk reaction to a subtle argument.

然而，这将是对微妙争论的下意识反应。

youdao

Of course that kind of knee-jerk reaction could produce a lot of false alarms.

当然，这种膝跳反射似的反应也会带来很多虚假的警报。

youdao

Of course that kind of knee-jerk reaction could produce a lot of false alarms.

当然，这种膝跳反射似的反应也会带来很多虚假的警报。

youdao