4 sentences

1. 谈到核物理，我可是个老外。

   tán​dào hé​wù​lǐ, wǒ kě​shì gè lǎo​wài.

   When it comes to nuclear physics, I'm a complete layman.

   Source: Dong Chinese Dictionary

2. 他谈到趣事时，不禁令人解颐。

   tā tán​dào qù​shì shí, bù​jīn lìng rén jiě​yí.

   When he talks about funny anecdotes, it never fails to make people smile.

   Source: Dong Chinese Dictionary

3. 你应该听听她是怎么谈到你的。

   nǐ yīng​gāi tīng tīng tā shì zěn​me tán​dào nǐ de.

   You should hear the way she talks about you.

   Source: OpenSubtitles

4. 他在会议中谈到了公司未来的发展计划。

   tā zài huì​yì zhōng tán​dào le gōng​sī wèi​lái de fā​zhǎn jì​huà.

   During the meeting, he spoke about the company's future development plans.

   Source: Dong Chinese Dictionary