产生泡沫

例句：

1. 1.The milk has turned into a foamymess on the surface.
   牛奶表面已经变成了泡沫状的一团。
2. 2. The bubbles burstand the water drains away.
   气泡破裂，水开始流走。
3. 3. Thechildren were playing with bubbles in the pool.
   孩子们在游泳池里玩着泡泡。