起泡沫地

例句：

1. 1. The milk has turned into a thick, creamy foam.
   牛奶变成了厚厚的奶油泡沫。
2. 2. The bubbles on the surface of the water are caused by the air trapped inside.
   水面上的气泡是由水里被困的气体造成的。
3. 3. When the cake comes out of the oven, it will be covered in a layer of golden foam.
   蛋糕出炉时，会覆盖一层金黄色的泡沫层。