6 sentences

1. 这道题的难度很大。

   zhè dào tí de nán​dù hěn dà.

   This problem is very difficult.

   Source: Dong Chinese Dictionary

2. 我们绝对不能小看这次比赛的难度。

   wǒ​men jué​duì bù néng xiǎo​kàn zhèi cì bǐ​sài de nán​dù.

   We must not underestimate the difficulty of this competition.

   Source: Dong Chinese Dictionary

3. 报酬应当与工作的难度和贡献相称。

   bào​chou yīng​dāng yǔ gōng​zuò de nán​dù hé gòng​xiàn xiāng​chèn.

   Remuneration should be commensurate with the difficulty of the work and the contribution.

   Source: Dong Chinese Dictionary

4. 这位飞行员在空中表演了高难度特技。

   zhè wèi fēi​xíng​yuán zài kōng​zhōng biǎo​yǎn le gāo nán​dù tè​jì.

   The pilot performed difficult aerobatic stunts in the air.

   Source: Dong Chinese Dictionary

5. 历年考题的难度都保持在相对稳定的水平。

   lì​nián kǎo​tí de nán​dù dōu bǎo​chí zài xiāng​duì wěn​dìng de shuǐ​píng.

   The difficulty of the exam questions over the years has remained relatively stable.

   Source: Dong Chinese Dictionary

6. 他花了一整天时间练习这个高难度的舞步。

   tā huā le yī zhěng tiān shí​jiān liàn​xí zhè gè gāo nán​dù de wǔ​bù.

   He spent the entire day practicing this difficult dance move.

   Source: Dong Chinese Dictionary