他因受到侮辱而决定采取报复行动。

He decided to take ___retaliatory action after being insulted.

他担心举报公司的不当行为会遭到报复。

He was afraid of facing ___retaliation after exposing the company's misconduct.

该国实施经济制裁作为对贸易壁垒的报复。

The country imposed economic sanctions in ___retaliation for the trade barriers.