Melt the butter over a medium-low heat. When it is melted and bubbly, put in the flour.

用中低火把黄油加热。待黄油熔化起泡后，放入面粉。

《柯林斯英汉双解大词典》

Melt the butter in a small saucepan over medium heat.

将黄油在一个小平底锅中用中火融化。

youdao

And Joey's just smiling at him, you couldn't melt butter in his mouth.

乔伊只是微微对他笑着，你简直无法在他的嘴巴里融化黄油。

youdao

Thin crackers of savory granola dipped in frozen black sesame butter melt on the tongue into a satisfying grit, and a miniature lobster roll comes on a tiny yeast-flavored meringue.

NEWYORKER: Atera

Meanwhile, melt the butter to make drawn butter (see below).

NPR: Recipes: 'The Summer Shack Cookbook'

In a small saucepan, melt the butter over medium-low heat.

FORBES: For the Caramel Filling