6 sentences

1. 我由衷地为他们高兴。

   wǒ yóu​zhōng de wèi tā​men gāo​xìng.

   I'm sincerely happy for them.

   Source: OpenSubtitles

2. 我们向他表示由衷的敬意。

   wǒ​men xiàng tā biǎo​shì yóu​zhōng de jìng​yì.

   We express our heartfelt respect to him.

   Source: Dong Chinese Dictionary

3. 我们由衷地祝贺他获得了奖学金。

   wǒ​men yóu​zhōng de zhù​hè tā huò​dé le jiǎng​xué​jīn.

   We heartily congratulate him on winning the scholarship.

   Source: Dong Chinese Dictionary

4. 对于大家的帮助，我表示由衷的感谢。

   duì​yú dà​jiā de bāng​zhù, wǒ biǎo​shì yóu​zhōng de gǎn​xiè.

   I express my heartfelt thanks for everyone's help.

   Source: Dong Chinese Dictionary

5. 他放弃高薪去支教，此举令人由衷敬佩。

   tā fàng​qì gāo​xīn qù zhī​jiào, cǐ jǔ lìng​rén yóu​zhōng jìng​pèi.

   His decision to give up a high salary to teach in underdeveloped areas is truly admirable.

   Source: Dong Chinese Dictionary

6. 看到如此壮丽的景色，我不禁由衷地感叹。

   kàn​dào rú​cǐ zhuàng​lì de jǐng​sè, wǒ bù​jīn yóu​zhōng de gǎn​tàn.

   Seeing such magnificent scenery, I couldn't help but sigh in admiration.

   Source: Dong Chinese Dictionary