He bought extra food in anticipation of more people coming than he'd invited.

他预料来的客人会比邀请的多，就多买了食物。

《牛津词典》

One common eating mistake among runners is that they overcompensate for the calories burned by exercise with extra calories from more food and beverages.

一个在跑步者中常见的饮食错误是他们用更多的食物和饮料的中额外卡路里来过度补偿锻炼消耗掉的卡路里。

youdao

We call them backpack snack packs, and started distributing them this year to give extra food to children because the situation is getting more difficult.

我们管它们叫“背包里的点心袋”（backpack snack packs），由于形势越来越艰难，我们从今年起开始给孩子们发放这些额外的食物”。

youdao

The use of gape-area to help assess how much food to bring means that the quantity automatically increases as the chicks grow, without them having to cheep more in order to get extra food.

ECONOMIST: Bird-brained | The

It is not hard to see that food-related security problems overseas could cost us far more than the extra pennies we'll pay at the grocery store.

CNN: Extreme heat and droughts -- a recipe for world food woes

Saacid says it could easily channel far more food into the heart of the famine itself, but has yet to receive extra supplies from the UN and other agencies.

BBC: Welcome to tough, unpredictable Mogadishu