If what you're saying is not compelling, it could backfire.

如果你说的话本身就不具可信性，就只能适得其反了。

youdao

Research also suggests that skipping breakfast could backfire on anyone who's doing it to stay, or become, slim.

研究还显示，不吃早餐会给那些企图减肥的人获得适得其反的效果。

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Although it would be practically possible to increase earnings or lower expenses in a definitive stage, I'm afraid this could backfire.

虽然实际上可能会增加在最终阶段的收入或降低成本，恐怕这可能会适得其反。

youdao

While the pragmatic approach to internationalism may yield short-term gains, it could backfire in the long run.

CNN: Is Hong Kong Open Only for Business?

Even if Latinos succeed in making their point about this one director and this one movie, it could backfire.

CNN: Latino should have played lead in 'Argo'

This has worked so far, but it could backfire if Burberry comes to be seen as more common than chic.

ECONOMIST: Face value