He was stirring a pot of soup.

他当时在搅一锅汤。

《柯林斯英汉双解大词典》

She brewed a pot of soup from the leftovers.

她用吃剩下的菜冲一盆汤。

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She brewed a pot of soup from the leftovers …

她用吃剩下的菜冲一盆汤。

youdao

This is a cyberspace equivalent of the fairytale about stone soup, in which two men set up a big pot full of water over a fire in a town square, drop in a stone, and start stirring.

ECONOMIST: Electronic commerce

First, the primary dashi, which functions as this soup's broth, comes together when a pot of water with kombu is boiled and bonito flakes are tossed in.

WSJ: Amaryll Schwertner's Poached Halibut in Dashi With Leeks, Sweet Potatoes and Sesame Seeds | Slow Food Fast