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

And I admit that some of it was simply a knee-jerk reaction that parents too often have: it's easier to say no than yes.

我也承认，我的这种反应几乎是下意识的，很多父母经常这么做，因为拒绝往往比同意更简单。

youdao

Government bond prices fell initially--with the yield on the benchmark 8.15% 2022 bond rising to 7.80% in a knee-jerk reaction from 7.74% earlier, before recovering to end at 7.74%.

WSJ: India Cuts Policy Rate

In a knee-jerk reaction there will be a call to ban or curtail the activities of these devils even though the report does not conclude that speculators were the cause for the run up in gasoline prices.

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So, I think we should make an effort to have a real discussion and not just a knee-jerk reaction when some of us say that the comedy stage has no place for sexism, racism and homophobia.

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