Tammy: No, but if he makes one false move, he could be expelled from the university just like that.

塔米：不会，但是万一他出错一次，他就可能会直接被那所大学退学。

youdao

That small nation is afraid that if she makes one false move the other countries may gang up on her.

那个小国担心一旦行动有了差错，别的国家可能会联合起来制裁它。

youdao

One false move and the bomb might blow up.

一步弄错，炸弹就可能会爆炸。

《牛津词典》

One false move and they could be delayed, which means they should have a greater chance of being seen and getting caught.

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Just one false move and they are out.

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Every false move seems to lead to another, more disastrous than the one before.

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