14 sentences

1. 这个任务较为艰巨。

   zhè​gè rèn​wu jiào​wéi jiān​jù.

   This task is rather arduous.

   Source: Dong Chinese Dictionary

2. 这个任务相当艰巨。

   zhè​gè rèn​wu xiāng​dāng jiān​jù.

   This task is quite arduous.

   Source: Dong Chinese Dictionary

3. 这项任务极其艰巨。

   zhè xiàng rèn​wu jí​qí jiān​jù.

   This task is extremely difficult.

   Source: Dong Chinese Dictionary

4. 这是一项非常艰巨的任务。

   zhè shì yī xiàng fēi​cháng jiān​jù de rèn​wu.

   This is a very daunting task.

   Source: Dong Chinese Dictionary

5. 我们要完成这项艰巨的任务。

   wǒ​men yào wán​chéng zhè xiàng jiān​jù de rèn​wu.

   We must complete this arduous task.

   Source: Dong Chinese Dictionary

6. 这是一个伟大而艰巨的任务。

   zhè shì yī gè wěi​dà ér jiān​jù de rèn​wu.

   This is a great and arduous task.

   Source: Dong Chinese Dictionary

7. 虽然任务艰巨，但我们必须挺住。

   suī​rán rèn​wu jiān​jù, dàn wǒ​men bì​xū tǐng zhù.

   Although the task is difficult, we must hold on.

   Source: Dong Chinese Dictionary

8. 他慨然应诺，接下了这个艰巨的任务。

   tā kǎi​rán yīng nuò, jiē​xià le zhè​gè jiān​jù de rèn​wu.

   He readily agreed and took on this arduous task.

   Source: Dong Chinese Dictionary

9. 历史赋予了我们这一代人艰巨的使命。

   lì​shǐ fù​yǔ le wǒ​men zhè yī dài rén jiān​jù de shǐ​mìng.

   History has entrusted our generation with a daunting mission.

   Source: Dong Chinese Dictionary

10. 无论前方的困难何等艰巨，他都决不退缩。

    wú​lùn qián​fāng de kùn​nan hé​děng jiān​jù, tā dōu jué bù tuì​suō.

    No matter how daunting the challenges ahead may be, he will never back down.

    Source: Dong Chinese Dictionary

11. 他考虑再三，还是承下了这个艰巨的任务。

    tā kǎo​lǜ zài​sān, hái​shi chéng xià le zhè​ge jiān​jù de rèn​wu.

    After much consideration, he took on this arduous task.

    Source: Dong Chinese Dictionary

12. 他区区几天时间就完成了这项艰巨的任务。

    tā qū​qū jǐ tiān shí​jiān jiù wán​chéng le zhè xiàng jiān​jù de rèn​wu.

    He finished this arduous task in just a few days.

    Source: Dong Chinese Dictionary

13. 凭借着顽强的毅力，他终于完成了这项艰巨的任务。

    píng​jiè zhe wán​qiáng de yì​lì, tā zhōng​yú wán​chéng le zhè xiàng jiān​jù de rèn​wu.

    With his tenacious perseverance, he finally completed this arduous task.

    Source: Dong Chinese Dictionary

14. 他在这么短的时间内完成了这项艰巨的任务，真了不起。

    tā zài zhè​me duǎn de shí​jiān nèi wán​chéng le zhè xiàng jiān​jù de rèn​wu, zhēn liǎo​bu​qǐ.

    It's remarkable that he completed such a daunting task in such a short time.

    Source: Dong Chinese Dictionary