无论她怎么侮辱他，他都无动于衷。

No matter what insults she throws at him, they ___are ___like ___water ___off ___a ___duck's ___back.

他的观点如此固执，任何争论都对他毫无影响。

His opinions are so fixed that any argument ___is ___like ___water ___off ___a ___duck's ___back.

对这位经验丰富的作家来说，严厉的评审反馈毫无影响。

The harsh feedback from the review ___was ___water ___off ___a ___duck's ___back for the experienced writer.