10 sentences

1. 这完全是出乎自愿的。

   zhè wán​quán shì chū​hū zì​yuàn de.

   This is entirely voluntary.

   Source: Dong Chinese Dictionary

2. 仇恨就像自愿服毒。

   chóu​hèn jiù xiàng zì​yuàn fú​dú.

   Hatred is like willingly ingesting poison.

   Source: OpenSubtitles

3. ‎你以为我是自愿离开的吗？

   ‎ nǐ yǐ​wéi wǒ shì zì​yuàn lí​kāi de ma?

   Do you think I left willingly?

   Source: OpenSubtitles

4. 我不在乎他是不是自愿的。

   wǒ bù zài​hu tā shì bù shì zì​yuàn de.

   I don't care if he volunteered.

   Source: OpenSubtitles

5. 我是自愿前来的。

   wǒ shì zì​yuàn qián​lái de.

   I came here voluntarily.

   Source: OpenSubtitles

6. 自愿练习在周日。

   zì​yuàn liàn​xí zài Zhōu​rì.

   Voluntary practice is on Sunday.

   Source: OpenSubtitles

7. 参加这次活动是完全自愿的。

   cān​jiā zhè cì huó​dòng shì wán​quán zì​yuàn de.

   Participation in this activity is entirely voluntary.

   Source: Dong Chinese Dictionary

8. 我自愿退出！

   wǒ zì​yuàn tuì​chū!

   I voluntarily quit!

   Source: OpenSubtitles

9. 他让当局相信，你很快就会自愿返回。

   tā ràng dāng​jú xiāng​xìn, nǐ hěn kuài jiù huì zì​yuàn fǎn​huí.

   He's convinced the authorities that you will soon return voluntarily.

   Source: OpenSubtitles

10. 那位有经验的猎人自愿在前面为大家向路。

    nà wèi yǒu jīng​yàn de liè​rén zì​yuàn zài qián​miàn wèi dà​jiā xiàng lù.

    That experienced hunter volunteered to lead the way for everyone.

    Source: Dong Chinese Dictionary