我们不得不将吹风机退回商店，因为它有残损。

We had to return the hairdryer to the store because it was faulty.

《牛津词典》

不然的话，就算是最老练的公司们也不得不退回到原先制定的分配系统。

Even the most sophisticated companies have to fall back on established distribution systems.

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因此，他们不得不退回到了漫长的道路。

So they had to fall a long way.

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因此，他们不得不退回到了漫长的道路。

So they had to fall a long way.

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