On the surface, China’s campaign to encourage mealtime thrift has been a cheerful affair：with soldiers, factory workers and schoolchildren shown polishing off their plates clean of food.
But behind the drive is a harsh reality. China does not have enough fresh food to go around — and neither does much of the world.
The pandemic and extreme weather have disrupted agricultural supply chains, leaving food prices sharply higher in countries as diverse as Yemen, Sudan, Mexico and South Korea. The United Nations warned in June that the world is on the brink of its worst food crisis in 50 years.
"It’s scary and it’s overwhelming," Arif Husain, chief economist of the United Nations World Food Program, said in an interview. "I don’t think we have seen anything like this ever."
on the surface：慣用語，表面上。
polish off：慣用語，輕鬆解決；（尤指）匆匆做完（工作）；迅速吃光（大批食物）。例句：It didn’t take him long to polish off the pizza.（他沒花多少時間就嗑掉了那個披薩。）
go around：慣用語，旋轉，轉動；滿足大家的需要，足夠分給每個人；習慣於（以某種方式行事）；走訪，拜訪，訪問。例句：Is there enough bread to go around?（麵包夠分嗎？）