Perhaps they were cooking up fish broths?

或者是鲜鱼汤？

youdao

Bezos won't say what kind of devices he's cooking up next.

贝佐斯不肯说下一个产品是什么样子的。

youdao

The Romans had to keep on cooking up new letters every time their numbers got bigger - C for 100, D for 500, M for 1, 000 - because they didn't have zeros to add on to the end.

当数字增大时，罗马人只能疲于接招，不断地创造出新的字母用来标记数字 —— C代表100，D代表500，M代表1000 —— 因为在他们的数字系统中不能将‘0’添加在数字后面。 想感觉100万有多大？

youdao

"People put up their own videos. There's kind of a grassroots, more home-cooking oriented movement online where people share videos and put them up on their blogs."

VOA: special.2010.12.27

"The idea has been cooking up inside my head for a long, long time, " King continued.

BBC: Warrington's Matt King is the inventor of the 'Crackit'

Cooking up a recipe which satisfies so many different appetites can't be done in a hurry.

BBC: EU budget: Wanted - a Goldilocks recipe?

No, they left without their entourages, so could they be cooking up a cunning plan?

BBC: NEWS | Europe | Diary: EU crisis summit