5 sentences

1. 一时的疏忽酿成了无法挽回的大错。

   yī​shí de shū​hu niàng​chéng le wú​fǎ wǎn​huí de dà​cuò.

   A moment's oversight led to an irreparable mistake.

   Source: Dong Chinese Dictionary

2. 我们必须采取有力措施来挽回经济损失。

   wǒ​men bì​xū cǎi​qǔ yǒu​lì cuò​shī lái wǎn​huí jīng​jì sǔn​shī.

   We must take effective measures to recover the economic losses.

   Source: Dong Chinese Dictionary

3. 既然这段感情已经无法挽回，你就放手吧。

   jì​rán zhè duàn gǎn​qíng yǐ​jīng wú​fǎ wǎn​huí, nǐ jiù fàng​shǒu ba.

   Since the relationship is beyond repair, you should let it go.

   Source: Dong Chinese Dictionary

4. 如果任由事态发展，势必会造成不可挽回的损失。

   rú​guǒ rèn​yóu shì​tài fā​zhǎn, shì​bì huì zào​chéng bù kě wǎn​huí de sǔn​shī.

   If things are allowed to take their course, it will inevitably cause irreparable losses.

   Source: Dong Chinese Dictionary

5. 他努力工作，试图挽回失去的信誉。

   tā nǔ​lì gōng​zuò, shì​tú wǎn​huí shī​qù de xìn​yù.

   He worked hard to try to regain his lost reputation.

   Source: Dong Chinese Dictionary