她尖刻的言语对他来说毫无影响。

Her harsh words just ___are ___like ___water ___off ___a ___duck's ___back to him.

你提出任何批评，她都毫不在乎。

Whatever criticism you offer is like ___water ___off ___a ___duck's ___back to her.

尽管收到了负面反馈，他的信心丝毫未受影响。

Despite the negative feedback, his confidence was ___like ___water ___off ___a ___duck's ___back.