We have this understanding that nobody talks about work over lunch.

我们有个默契：吃午饭时谁也不许谈工作。

《牛津词典》

I've really enjoyed our long talks together at lunch.

我十分喜爱我们在午饭后的长谈。

youdao

The activity cost includes the expenses of in the reception lunch, the fair talks and visits. The expense involved in personal activity and others should be self-payment during the fair period.

活动费用包括招待午宴、会务费，会议资料费，会议期间个人活动及消费所涉及费用自理。

youdao

There are study days, lunch-time talks and meetings with artists where the back-and-forth with festival-goers reveals a high degree of intellectual curiosity.

ECONOMIST: Summer festivals

As we were discussing over lunch, it is time for direct talks, not least because it is time for each, Israel and Palestine, to test the seriousness of the other.

WHITEHOUSE: President Obama and Prime Minister Cameron at the White House | The White House

After lunch, it was a dash back to Kuala Lumpur for talks in the afternoon with Razali Ismail, the Malaysian who is president of the U.N.

CNN: A DAY IN THE LIFE