关于“光盘行动”的英语对话，可以参考以下几种表达方式：

鼓励节约的对话

A: Hey, have you heard about the "Clean Plate Campaign"？

B: No, what's that？

A: It's a campaign to encourage people to finish their food and reduce waste. Restaurants are offering smaller portions and reminding customers to only take what they can eat.

B: That's a great idea! We all should do our part in saving food and resources.

宣传节约的句子

Go Green, Eat Clean, and Join the "Clean Plate" Campaign!

No More Waste, No More Hunger: Support the "Clean Plate" Movement!

Save Food, Save Resources: Be a Part of the "Clean Plate" Initiative!

Join the "Clean Plate" Revolution: Eat Smart, Eat Responsibly!

描述光盘行动的场景

A: Look at this, we finished our plates at lunch today.

B: Yeah, it feels good to not waste any food.

A: We should always try to eat everything we take, it's important for our planet.

讨论光盘行动的重要性

A: Why do you think the "Clean Plate Campaign" is important？

B: Well, it helps reduce food waste and saves resources. Plus, it promotes the idea of being more mindful about what we eat.

A: Absolutely, it's a small step we can take to make a big difference.

这些对话和句子可以用来在多种场合宣传“光盘行动”，鼓励人们养成节约粮食的好习惯。