4 sentences

1. 那次行动的成败犹未可知。

   nà cì xíng​dòng de chéng​bài yóu wèi kě zhī.

   The success or failure of that operation is still unknown.

   Source: Dong Chinese Dictionary

2. 成败在此一举。

   chéng​bài zài cǐ yī​jǔ.

   Success or failure depends on this one move.

   Source: Dong Chinese Dictionary

3. 这件事情的成败，全在乎你的努力。

   zhè jiàn shì​qing de chéng​bài, quán zài​hu nǐ de nǔ​lì.

   The success or failure of this matter depends entirely on your effort.

   Source: Dong Chinese Dictionary

4. 这个问题关系到整个项目的成败。

   zhè gè wèn​tí guān​xì​dào zhěng gè xiàng​mù de chéng​bài.

   This issue concerns the success or failure of the entire project.

   Source: Dong Chinese Dictionary