suds

She filled the sink with warm water and soap until it was covered in thick suds.

(Chinese) 她往水槽里灌满温水和肥皂，直到上面覆盖了一层厚厚的泡沫。

Rinse the car thoroughly to get all the suds off before drying it.

(Chinese) 在擦干汽车之前，彻底冲洗一下，把所有的肥皂沫都冲掉。