孩子们洗手时用肥皂水吹出了好多泡泡。

The kids blew ___soapsuds in the air while washing their hands.

这篇论文充满了华丽的辞藻，但内容不过是些空洞的肥皂泡。

The essay is full of fancy words, but its content is nothing more than political ___soapsuds.